W&T Electronics 57661 Manual 

Type 10/100BaseT, 12-24V Model 57661, 57662 Release 1.63, Jun 2010

Microsoft, MS-DOS, Windows, Winsock und Visual Basic are registered trademarks of Microsoft Corporation Subject to errors and modifications: Since errors are always possible, none of this information should be used without checking. Please let us know of any mistakes or unclear descriptions so that we can become aware of them and correct them as quickly as possible. Perform work on and with W&T products only as described here and after you have read and fully understood the manual. Improper use may result in hazardous conditions. We are not liable for improper use. If in doubt, please check first with us or with your dealer!

functions in a single box for capturing your analog measurements (0..20mA or 0..10V), tunneling them through the network, saving and displaying them. A variety of alarm functions are also available which can be custom added to your own applications or into existing systems. This manual contains all the information you need for installation, configuration and operation of the Web-IO Analog- In/Out devices..

1 Quick-start, Commissioning ......................................................... 7 1.1.1 Connect to power ................................................... 7 1.1.2 PoE supply ............................................................. 8 1.2.1 Wiring the in- and outputs ....................................... 9 1.3 Network connection ...................................................... 12 1.4 Assigning the IP address using „WuTility“ ....................... 13 1.5 Assigning the IP address using DHCP protocol ................ 15 1.5.1 Enabling/Disabling DHCP ...................................... 15 1.5.2 System Name ........................................................ 16 1.5.3 Lease-Time ........................................................... 17 1.5.4 Reserved IP addresses ........................................... 18 1.5.5 Dynamic IP addresses ............................................ 18 1.6 Start page ..................................................................... 19 1.7 Assigning the basic network parameters ......................... 21 2 Graphical Representation of the Measurements ..................24 2.1 Basic functions ............................................................. 24 2.2 Config-Menu ................................................................ 26 2.3 Table............................................................................ 28 3 Other Basic Settings .......................................................................29 3.1 Configuring the port and device name ............................ 29 3.2 Specifying Output Mode ................................................ 32 3.3 Compensation of the output controller (57662 only) ....... 33 3.4 HTTP - Controlling outputs in the browser ...................... 36 3.5 HTTP - Controlling outputs using a command string ....... 37 3.6 HTTP - Polling inputs using a command string ................ 38 3.7 BINARY - Socket programs with binary structures ............ 39 3.7.1 Specifying the operating mode............................... 40 3.7.2 The Web-IO Analog-In/Out as Socket-Server ............ 41 3.7.3 The Web-IO as Socket-Client .................................. 45 3.7.4 The Web-IO as UDP-Peer ........................................ 48 3.7.5 Password protection.............................................. 51 3.7.6 BINARY - The IO structures .................................... 53 3.7.7 Definition of the IO structures ................................ 54 3.7.8 Working with the IO structures ............................... 56

3.8 Box-to-Box ................................................................... 60 3.8.1 Configuring the Slave Web-IO ................................ 60 3.8.2 Configuring the Master .......................................... 63 3.8.3 Determining Box-to-Box connection status ............. 67 3.8.4 Quitting Box-to-Box mode ..................................... 68 3.8.5 Quitting Box-to-Box mode only for the Slave Web-IO 69 3.9 OPC - Standardized access ............................................. 71 3.9.1 Installing the OPC-Server ....................................... 71 3.9.2 Uninstalling .......................................................... 72 3.9.3 Configuring .......................................................... 72 3.9.4 Configuring the Web-IO as an OPC device ............... 76 3.9.5 Program options ................................................... 79 3.9.6 Data model for OPC Data Access ............................ 81 3.9.7 OPC variables for Web-IO Analog ........................... 82 3.9.8 OPC Alarms & Events ............................................ 83 3.10 Local time setting........................................................ 85 3.10.2 Summertime............................................................. 86 3.11 Automatic time setting using a network time service...... 88 3.12 Configuring the data logger ......................................... 89 3.13 Configuring the graphics output .................................. 91 3.13.1 Basic Settings ..................................................... 91 3.13.2 Select Sensor ...................................................... 94 3.13.3 Scale Config ....................................................... 95 3.14 Calibration.................................................................. 97 3.15 Browser access ........................................................... 98 3.16 Sending alarms via e-mail ............................................ 99 3.17 SNMP incl. alarm sending per Trap .............................. 108 3.18 Sending alarms per TCP (Client Mode) ........................ 112 3.19 Sending alarms per FTP (Client Mode) ......................... 113 3.20 Syslog messages incl. alarm sending .......................... 117 3.21 Time-based report ..................................................... 120 3.22 Check Alarm ............................................................. 120 3.23 ASCII command strings per TCP Port 80...................... 121 3.24 ASCII command strings per UDP ................................. 122 3.25 UP-/Download........................................................... 123

4.1 Polling via TCP/IP ........................................................ 125 4.2 Polling via UDP ............................................................ 125 4.3 Polling via SNMP .......................................................... 126 5 Including Measurements in your own Web Page ............. 129 6 Data Logger .................................................................................... 134 7 Appendix ......................................................................................... 135 7.1 Alternative IP address assigning ................................... 135 7.2 Example for creating your own Web pages .................... 138 7.3 Firmware update ......................................................... 145 7.3.1 Where is the current firmware available? ................ 145 7.3.2 Firmware update over the network under Windows . 145 7.3.3 LED indicators .................................................... 147 7.4 Emergency access ....................................................... 149 7.5 Technical data ............................................................ 150 7.6 Disposal ..................................................................... 151

1 Quick-start, Commissioning To start up the W&T Web-IO Analog-In/Out and make it visible in your network only a few steps are necessary. 1.1.1 Connect to power If you want to use a power supply, connect 18-48V DC or 18- 30V AC to the screw terminal provided. Polarity is uncritical when connecting AC power supplies. When connecting DC po- wer supplies please note the polarity as indicated on the screw terminal adapter:

supply plug into the screw terminal adapter: 1.1.2 PoE supply The Web-IO Analog-In/Out can be used in PoE (Power-over- Ethernet) environments in accordance with IEEE802.3af. The supply voltage is provided then by the network infrastructure through the RJ45 terminal. The device supports both phantom power using data pairs 1/2 and 3/6 as well as power on the unused wire pairs 4/5 and 7/8. To enable power management for the supplying components, the W&T Web-IO Analog-In/Out is identified as a Power Class 1 device with a power consumption of 0.44 to 3.8W. As an alternative to PoE the device can also be powered externally using the screw terminal located on the underside of the device. ! Use of the W&T Web-IO Analog-In/Out is also possible in networks wihtout PoE. In this casde simply use an external power supply with the screw terminals as described above. No additional configurations or settings are necessary.

1.2.1 Wiring the in- and outputs Depending on the configuration the W&T Web-IO Analog-In/Out can be wired as follows, whereby Ports 1 and 2 are indicated by an „X“. The configuration is identical for both ports: 1.2.2 Current input 0..20mA, passive (#57661) 1.2.3 Current input 0..20mA, active (#57661)

1.2.5 Voltage input 0..10V (#57662) 1.2.6 Voltage output (#57662) The voltage output must be jumpered to the Sense input, which can be used to measure and regulate the output voltage. This jumper can be made either directly on the device or at the remote end. For longer cable distances the jumper should be made on the remote end so that fluctuations are automatically compensated for.

Jumper directly on the device: Jumper at the remote end:

The W&T Web-IO Analog-In/Out has an IEEE 802.3 compatible network connection on a shielded RJ45 connector. The pin configuration corresponds to an MDI interface, so that the connection is made to the hub or swtich using a 1:1 shielded patch cable.. Power-over-Ethernet The W&T Web-IO Analog-In/Out can obtain its supply voltage through the network interface in accordance with IEEE802.3af / Power-over-Internet. The feed comes in over the data pairs or on the wire pairs not used for 10/100BaseT (see PoE section). . U

1.4 Assigning the IP address using „WuTility“ Once the hardware has been connected to the power supply as described above, the IP address needed for operating in a TCP/IP network must be assigned. You should obtrain the correct value for this parameter from your systems administrator. ! The IP address must be unique in the network. There are various ways of assigning the IP address. To make the procedure as convenient as possible, we have developed the „WuTility“ tool, which you can download from the WuT homepage at http://www.wut.de. This procedure is described in the following. A summary of the options for assigning the IP address can be found in the Appendix of this manual.. Be sure that the PC you are using to assign the IP address is located in the same subnet as the W&T unit and that both the PC and the unit are connected to the network. When first started, WuTility automatically searches the local network for all connected W&T network devices and generates an inventory list. This search process can be repeated as often as desired by clicking on the Scan button: Select your Web-IO from the displayed list based on its MAC address:

In the resulting window enter the desired network parameters for the device. Clicking on the Next button assigns the network parameters to the device. All the columns in the WuTility device list are filled with information. After clicking on the globe in the WuTIlity menu bar your standard browser is opened and you see the start page of the device.

1.5 Assigning the IP address using DHCP protocol Many networks use DHCP (Dynamic Host Configuration Protocol) or the predecessor protocol BOOTP (described in the following section) for centralized and dynamic assignment of the network parameters. DHCP protocol is enabled by factory default setting, so that in network environments wtih dynamic IP assignment you need only to connect the W&T Web-IO Ana- log-In/Out to the network. The following parameters can be set using DHCP: • IP address • Subnet mask • Gateway address • DNS server • Lease time 1 To prevent unintended address assignments or address changes, we recommend disabling DHCP, BOOTP and RARP protocols unless they are expressly used in the respective network environment. W&T Web-IO Analog-In/Out units with incorrectly assigned IP addresses can be conveniently located and reconfigured using the WuTility management tool. 1.5.1 Enabling/Disabling DHCP The factory default setting is for DHCP protocol enabled. To disable or enable it again later any of the following methods may be used. • WuTility management tool From the device list select the desired W&T Web-IO Analog- In/Out and click on the IP Address button. In the dialog box enter the new network parameters you want to assign. Disable the options BOOTP and DHCP. Click on Next to send the new configuration data to the W&T Web-IO Analog-In/Out.

In the menu path Config r Device r Basic Settings r Network the protocols can be alternatingly enabled or disabled. For detailed information see the section Assigning basic network parameters.. 1.5.2 System Name To suypport any automatic updating of the DNS system by the DHCP server the W&T Web-IO Analog-In/Out identifies itself within the DHCP protocol by its system name. The factory default setting is WEBIO- followed by the last three places of the Ethernet address. For example, the factory set system name of a W&T Web-IO Analog-In/Out with Ethernet address 00:c0:3d:01.02.03 is WEBIO-010203. The system name of the W&T Web-IO Analog-In/ Out can be changed using Web Based Management.

1.5.3 Lease-Time The lease time determined and sent by the DHCP server specifies the term of the assigned IP address. After half the lea- se time has expired the W&T Web-IO Analog-In/Out attempts to extend or update the address. If this is not possible before the lease time expires, for example because the DHCP server can no longer be reached, the W&T Web-IO Analog-In/Out deletes the IP address and begins a cyclical search for alternate DHCP servers for assigning a new IP address. The lease time associated with the current IP address is no longer available after a reset. After restarting, therefore, a corresponding update request is made by the original DHCP server. If the server cannot be reached at this time the W&T Web- IO Analog-In/Out deletes the IP address and begins a cyclical search for alternate DHCP servers. If DHCP is enabled, the remaining lease time together with the current IP address is displaced in seconds in the menu path Home r Doc r Property. 1 If the DHCP server is no longer accessible after expiration of the lease time, the W&T Web-IO Analog-In/Out deletes its IP address. All existing TCP/UDP connections between the W&T Web-IO Analog-In/Out and other network clients are thereby closed. To prevent such situations, we recommend configuring the assigned lease time in the DHCP server to infinite whenever possible.

The W&T Web-IO Analog-In/Out provides services which can make use of the other clients in the network as needed. Of course the current IP address of the W&T Web-IO Analog-In/Out is needed by these clients in order to open a connection, so that in these cases it makes sense to reserve a particular IP address for the W&T Web-IO Analog-In/Out. This is generally done by linking the IP address to the unique Ethernet address of the unit, which can be found on the sticker on the housing. ����� ����� ��������������� ��������� ���������������� 1.5.5 Dynamic IP addresses Fully dynamic address assignment, whereby the Web-IO Ana- log-In/Out is given a different IP address after each restartor after the lease time expires, is only practical in network environments with automatic cross-linking between the DHCP and DNS services. This means when assigning a new IP address to the Web-IO Analog-In/Out, the DHCP server automatically updates the DNS system as well. The new address is assigned to the respective domain name. For detailed information about your network environment, consult your systems administrator when in doubt. For time server requests, sending e-mails or other client applications where the device itself actively seraches for server services located in the network, dynamic changing IP addresses can also be used.

1.6 Start page As soon as an IP address is assigned, the start page of the device can be opened in the Web browser: When first opened you must select the device language. Once this is done, you are taken to the actual start page of the device.

„Show menu“ link. If you assign a password later in the configuration, you can login here. Also on this page you can switch to the User page to directly read out the data logger of the unit. Display the menu to proceed with the rest of the configuration.

On the next page select the configuration path using the profiles. Select the profile „Network basic parameters“ and click on the „Show profile“ button“. 1.7 Assigning the basic network parameters At left in the configuration tree click on „Config“. You are now prompted to enter a password. The factory default setting is for no password, so that you can simply click on the Login button without entering a password.

for this profile. In the configuration menu click on the entry „Network“.

Clicking on the „Save“ button stores the settings in the device and closes your configuration session. After the network parameters are changed the device automatically performs a restart. The device is now ready to use in your network. For ease of handling use the additional profiles for adapting the device to your needs. On the following page enter all the necessary network parameters and then click on the „Logout“ button.

2.1 Basic functions The device provides a table of the current values and a chart of the current values on the home.htm page. The navigation vuttons on the bottom provide the following control functions. Scrolls the chart to the right or left by the size of the display interval. Scrolls the chart right or left by one unit of the x-axis. Zooms in to the area of the chart indicated by „Zoom +“ on the lower right edge.

Zooms out to the previous zoom level. Activates automatic updating of the chart. Measured value representation: Large point: This value is stored in the data logger of the device. Small point: This value is a volatile one which is used only for display and is not stored in the data logger. ! When exiting the zoom level these values are lost. The connecting lines are only displayed in the zoom level which represents the memory. Updates the display. To print out the page containing the graphical display, you must enable printing of background colors and images in the Internet options. In Microsoft Internet Explorer this setting is found in Opens the configuration menu beneath the chart Displays the values current displayed in the chart in table format Opens a new page with a snapshot of the chart display.

varied. For additional information, see the section Configuring the graphical display. 2.2 Config-Menu Tools -> Internet options -> Advanced

The following functions are available from the configuration menu below the graphical display: Start: Specify the starting time point for the x-axis End: Specify the end time point for the x-axis. Sensors: Turn individual sensors for the display on and off. Polling Rate: Enter here the desired polling rate for the graphical display. The device makes a new value available no sooner than 0.5 seconds. Entering a value of less than 0,.5 has no effect. Extreme: If in the graphical display a zoom level is selected in which a display point represents a measurement interval and not an individual measuring point, this function is used to display the maximum and miminum measured during this interval. If the zoom level is selected so that every measurement is displayed, this function has no effect. If the function is turned off, the average of the displayed interval is displayed. Show alarm monitor: Uses a bar graph to show whether the alarm monitor is active or inactive for the respective alarm. Apply: The changes made are immediately applied to the graphical display.

in table format. As soon as not all the stored values can be displayed, the following values for the sensor are shown in the table: Max: The maximum value in the displayed interval Min: The minimum value in the displayed interval Ø: The average value of the displayed interval

3 Other Basic Settings 3.1 Configuring the port and device name 3.1.1 Text Enter your personal descriptions in the fields and then click on „Apply“.

the measuring range for adapting the input wiring for your measuring point (For model 57661 only: Measuring range 0..20mA or 4..20mA). To disable the port, select „Disconnect.“ Configuring the current input and output (Model 57661):

You must specify which mode you want each individual output to operate in. The corresponding configuration can be made under Config >> Ports >> PortX >> Output Mode. Output Mask: Here you specify which operating mode is used for each output. The factory default setting for all ports is HTTP. Please note that for most of the modes you must make a few other settings in addition to output mode, such as enabling the operating mode. Additional information can be found in the description for the respective operating mode.

Safety State / Timeout / Value If no network activity is detected for the timeout time set here, the Web-IO Analog-In/Out sets the outputs to a configurable value (Safety Value). After selecting the output modes click on Apply to sent the settings to the device. Use the Logout button to activate the settings and then click on Save. 3.3 Compensation of the output controller (57662 only) During the use of applications, which have a high entrance capacity, it is necessary to compensate the voltage regulator to prevent an overshooting of the output value. Example: Output regulation with entrance capacity of 100µF, without compensation:

compensation. The test pulses with a capacity of 100µF appear as follows: This overshooting can be avoided with a compensation value between 0 and 1000. This value can be configured manually, or determined automatically. The device adjusts two test pulses with 80% amplitude at the output. To start the automatic determination of the compensation click on the button „send test pulses “. 1 Please make sure that no sensitive devices are attached to the output to avoid inadvertent output levels.

Value: The device enters the determined compensation value automatically. This value is valid immediately. The value can also be set manually. Subsequently, the desired value which was present before the determination will be adjusted again. Mode: Auto adaptive enable: The device determines the compensation at run-time. Here no compensation value must be registered. The disadvantage here is in the fact that constantly changing capacities must be measured first, until the initial value fits again correctly. Use saved value at power on: If this function is activated, the adjusted compensation value is used immediately after starting the device. Example: Output regulation with entrance capacity of 100µF, with compensation:

Access from the browser is probably the simplest way of working with the Web-IO Analog-In/Out. To operate the outputs from the browser it is necessary to log in as Administrator or with Config rights. After successfuly logging in, the control elements for the output are enabled using the Control menu point.

The Follow slider checkbox causes the selected output value to be set as soon as the slide controller is released at a certain point. At the same time the slide controller automatically changes its position when the device changes its output value, for example using TCP commands. If the Follow slider checkbox is not selected, an input field and a button appear which can be used to manually set the output. The value in the input field can also be set using the slide controller. The entered output value is set as soon as the Set button is clicked. 3.5 HTTP - Controlling outputs using a command string You can also use a TCP client in HTTP mode to set the outputs using HTTP-GET commands. Here you use the expression: GET /outputaccessX?PW=&State=& X: Number of the output: 1=Port 1, 2= Port 2 password: If an Admin password is assigned, it must be entered here in order to be able to set the output value. If no password is assigned, leave this place blank (...?PW=&...)

respective output. The unit of the value corresponds to the scale settings you configured under Config >> Ports >> Port X >> Config. To set a value of 50 on Channel 2 without an assigned password, use for example the expression: GET /outputaccess2?PW=&State=50& 3.6 HTTP - Polling inputs using a command string Similar to setting the output, both input channels can also be polled using command strings. What is sent out depends on the setting GET Header enable under Config >> Device >> Basic Settings >> HTTP. If this box is checked the evice sends its IP address in front in the reply along with the system name and sensor name. If the box is unchecked only the actual measurement values are output. The expression for polling the respective port is: GET /SingleX X: Number of the input: 1=Port 1, 2= Port 2 Example, Display with option GET Header enable: 10.40.42.44;WEBIO-046EE9;Sensor 1 0-20mA;14.300 mA Example, Display without option GET Header enable: 14.300 mA

When entering the command string GET /Single without a port number the device outputs the values for both ports separated by semicolons: 10.40.42.44;WEBIO-046EE9;12,000 mA;5,000 mA or 12.000 mA;5.000 mA 3.7 BINARY - Socket programs with binary structures The Web-IO Analog-In/Out provides two independent socket accesses, Binary 1 and Binary 2, for binary data exchange. Both can be used and configured independently of each other. Whether the device should use the respective BINARY socket as a TCP server, TCP client or UDP peer depends on the desired application Here is an overview of applications and operating modes for the Web-IO. . Customer socket application (binary with password protection) . TCP-Server . TCP-Client . UDP-Peer . Customer socket application which uses the same structure as the W&T Digital- EA-Com-Server 50xxx. . TCP-Server . TCP-Client . UDP-Peer

. TCP-Server Binary socket access In this section you will learn how the Web-IO Analog-In/Out can be accessed from your own professional applications using sockets with binary structures. i Box-to-Box and OPC device modes are covered in greater detail in the next sections. 3.7.1 Specifying the operating mode First you must specify whether the Web-IO Analog-In/Out will be be used in your application as a TCP client, TCP server or UDP peer. In the navigation tree Config >> Device >> Basic Settings >> select Binary 1 if you want to configure the operation mode for access through Binary 1. m Necessary access rights: Administrator

3.7.2 The Web-IO Analog-In/Out as Socket-Server To operate the Web-IO Analog-In/Out as a socket server, a few additional settings must be made. In the navigation tree select Config >> Device >> Basic Settings >> Binary 1>> TCP Server m Necessary access rights: Administrator After selecting the desired mode and setting Enable Binary send the setting to the Web-IO Analog-In/Out by clicking on the Apply button. For access from your own application programs the developer is provided with two levels of the socket programming. 1. Socket Device (password protected access) 2. Compatible 50xxx (This mode is compatible with the binary structure which was alrelady used by the older W&T Digital I/O Com-Servers.) Both access options use the same binary structures and differ only in the absence of password protection in Compatible 50xxx mode.

application requires a different local port for the Web-IO, enter the desired port number in the Local Port field. Client HTTP Port Is only relevant for OPC and Box2Box modes and specifies the HTTP port on which a control line should open a connection to the OPC server or slave box. Unless otherwise specified, Port 80 should always be used here. Binary Trigger Enter here a hysteresis value for both ports which, when it is reached or exceeded, should trigger sending of data to the client application (important for event-triggered applications).

Application Mode Select here: . Socket Device - If you want access to the Web-IO password protected. . Compatible 50xxx - If you want access to the Web-IO using applications which were programmed fo the older Digital I/O Com-Servers. You can also use this mode for new applications that do not require password protection. i A more detailed discussion of Box2Box Slave and OPC Device modes can be found in the corresponding sections. After all your settings have been made, send them to the Web-IO by clicking on the Apply button. In addition, the ports used must be enabled for Binary Mode. In the navigation tree select Config >> Ports >> Port X >> Output Mode and highlight the desired binary access. m Necessary access rights: Administrator

clicking on the Logout button. Click on the Save button to activate the settings. i All configuration possibilities shown for Binary 1 may also be used for Binary 2.

3.7.3 The Web-IO as Socket-Client To operate the Web-IO as a socket client, a few additional settings must be made In the navigation tree select Config >> Device >> Basic Settings >> Binary 1>> TCP Client m Necessary access rights: Administrator Local Port The local port of the Web-IO is factory set to AUTO. If your application requires a special local port for the Web-IO, enter the desired port number in the Local Port field.

to receive the connection. Server HTTP Port Is only relevant for Box2Box mode and specifies the HTTP port on which a control line should open a connection to the slave box. Unless otherwise specified, always use Port 80 here. Server IP Addr Server IP Addr Server IP Addr Server IP Addr Server IP Addr Enter here the IP address of the server. Server Password Server Password Server Password Server Password Server Password A server password only needs to be entered if the Web-IO is used as a Box-to-Box Master or needs to access a different Web-IO as a TCP client in Server mode. More about this in the Box-to-Box section. Inactive Timeout Here a timer is configured. After the time expires, the Web-IO closes the TCP connection. The value is entered in decimal land in 100ms increments. The timer is reset during an active connection when data are exchanged. Example: The value 10 corresponds to one second. If no data transfer is detected for one second, the Web-IO closes the connection. If no value is entered, automatic connection closing is disabled.. Binary Trigger Binary Trigger Binary Trigger Binary Trigger Binary Trigger Here you select the ports whose status change should act as a trigger for opening the TCP connection and sending data to the server (important for event-triggered applications). Interval If you want the status of the inputs to be sent cyclically to the server application, you can enter here the interval iln 100ms increments.

Example: A value of 300 corresponds to 30 seconds. 1 Please note that for connections using fee-based dial-up connections too small an interval may result in the connection not being closed, in turn resulting in permanent fees! Mode Select here: . Socket Device - If you want access to the Web-IO password protected. . Compatible 50xxx - If you want access to the Web-IO using applications which were programmed fo the older Digital I/O Com-Servers. You can also use this mode for new applications that do not require password protection. More detailed information about Box2Box Master mode can be found in the Box-to-Box section. After all your settings have been made, send them to the Web-IO by clicking on the Apply button. In addition you must enable the used outputs for Binary mode. Now in the navigation tree select Config >> Ports >> Port X >> Output Mode and highlight the desired Binary access. m Necessary access rights: Administrator

on the Logout button. Clicking on the Save button activates the settings. 3.7.4 The Web-IO as UDP-Peer To use the Web-IO as a UDP peer a few additional settings must be made. In the navigation tree select Config >> Device >> Basic Settings >> Binary 1>> UDP Peer m Necessary access rights: Administrator

Local Port The local port on the device is factory set to 45889. If your application requires a different local port for the Web-IO, enter the desired port number in the Local Port field.. Remote Port Enter here the port number you want the UDP application to use for receiving data when communicating with the Web-IO. Remote IP Addr Enter here the IP address of the communication partner. Binary Trigger Enter here the inputs whose change of state should be used as the trigger for sending a UDP datagram (important for event- triggered applications). Interval If you want the status of the inputs to be sent cyclically to the communication partner, enter here the interval in 100ms

1 Please note that for connections using fee-based dial-up connections too small an interval may result in the connection not being closed, in turn resulting in permanent fees! Application Mode In the configuration as UDP peer there is no difference between Socket Device and Compatible 50xxx modes. After all your settings have been made, send them to the Web-IO by clicking on the Apply button. In addition you must enable the used outputs for Binary mode. Now in the navigation tree select Config >> Ports >> Port X >> Output Mode and highlight the desired Binary access. m Necessary access rights: Administrator After you have made all your settings, send them by clicking on the Logout button. Clicking on the Save button activates settings.

3.7.5 Password protection As already mentioned earlier, the Web-IO enables you in TCP server mode to protect access through the application using a password. Before the actual connection to the Web-IO is opened, the BinInfo structure defined here must be sent over a separate TCP connection to the HTTP port (factory set to Port 80) on the Web- IO. For the reply the Web-IO also uses the structure BinInfo. The individual variables of the structure are filled in as follows: HTTPLogin[n] Ist ein Bytefeld bzw. String, der sich aus einem Loginstring und dem verwendeten Administrator-Passwort zusammen setzt. GET /bin?LPW=& n stands for the number of bytes used and corresponds to 14 + the length of the password. The length of the password is limited to 31 characters. In the reply from the Web-IO HTTPLogin is always 8 characters in length and contains the following string: GET /bin Dummy Slash between the ASCII and the binary section of the structure. BinInfo BYTE[n]0 HTTPlogin n = 14 bytes + password (PC <-> Web-IO WORD dummy always 0 BYTE type type of request BYTE subtype additional information LONG srcip source ip-address WORD srcport source port WORD destport destination port

Type Determines the type in which Binary mode is used. The application must enter 0x04 here in order to open a TCP connection. In its reply the Web-IO enters 0x02 if the connection request was accepted 0x03 if the connection request was denied. SubType Provides more details about the status of the connection request. The application always sends 0x00. The Web-IO replies with 0x01 BINSUBTYPE_OK, // wenn die Verbindungsanforderung akzeptiert wurde. 0x02 BINSUBTYPE_NO_ACCESS,// wenn bereits eine Verbindung besteht 0x04 BINSUBTYPE_WAIT, // wenn die Verbindung erst nach einem // Timeout hergestellt werden darf 0x07 BINSUBTYPE_PW_MISMATCH, // bei falschem Passwort 0x08 BINSUBTYPE_DEST_PORT_MISMATCH, // bei falschem Destination Port 0x09 BINSUBTYPE_MODUS_MISMATCH, // bei falschem Modus If 0x01 or 0x04 was received, the actual data connection can be opened. SrcPort The client application alwlays enters a 0 here. The Web-IO returns here the opened server port (e.g. 49153 for Binary 1). If the login attempt has failed, the Web-IO enters 80.

Socket-Schnittstelle IP-Header Ethernet-Header Ethernet-Nutzdaten IO-Strukturen UDP-/TCP-Nutzdaten UDP-/TCP-Header IP-Nutzdaten DestPort The client application enters here which port will be used for the connection (e.g. 49153 for Binary 1 or 49154 for Binary 2). The Web-IO always returns 0 The connection through which the BinInfo structure was transmitted is automatically closed by the Web-IO. 3.7.6 BINARY - The IO structures To enable simple communication between the user program on the computer and the Web-IO, there are a limited number of structures (variable fields) which define the format and content of the data exchanged between the user program and the Web- IO. IO structures are provided for the following functions: . Reading the inputs . Setting the outputs . Parameterizing the cyclical and automatic messaging when there is a status change The user program uses the easy to use socket4 interface ( W i n d o w s : W i n S o c k , U N I X , L i n u x : B e r k l e y Sockets) for exchanging data in the form of these IO structures with the Web-IO over the network via TCP/IP. The IO structures do not depend on the network protocol used (TCP or UDP). Which of the two protocols are used, UDP or TCP, depends on the type of application. Both protocols offer advantages and

application you want to create. i Help with socket programming including the basics of TCP/IP can be found in a short and clear form in our manual „Ready in 1 day for TCP/IP Sockets“. Program examples for client/server applications under TCP/IP are located on our homepage at http://www.wut.de. 3.7.7 Definition of the IO structures To be able to unambiguously identify and process the contents of a packet, in BINARY mode all the data must be sent to the Web-IO in the form of these IO structures regardless of whether 50xxx-compatible or Socket Client mode is used.. All structures begin with the same header which consists of the following 4 WORDS (16bit_Integer): send_sequence, rec_sequence For compatibilty reasons with respect to older Digital I/O Com- Servers send_sequence and rec_sequence are provided but not used. Both values are always 0. Structure-Header WORD send_sequence always 0 WORD rec_sequence always 0 WORD struct_type identifies the structure WORD length length of the structure in bytes

struct_type The value struct_type identifies which structure is being used. Both the PC application and the Web-IO decide when the data are received how the structure should be processed based on the value struct_type. length length indicates the total length of the structure in bytes, i.e. including the first 4 WORDs. The result is the following packet structure: 1 Note: The following applies for all IO structures A WORD corresponds to 16bit_integer (unsigned) A BYTE corresponds to one byte (8 bits) A LONG corresponds to a 232bit_integer (unsigned) Hexadecimal format 0x in front of the value 1 When sending and receiving, the following applies for all structure variables: Low-Byte first. The following structure would look as follows when sent on the network: low byte high byte low byte high byte low byte high byte low byte high byte 00 00 00 00 01 00 08 00 send_sequence rec_sequence struct_type length Structure buildup WORD send_sequence always 0 WORD rec_sequence always 0 WORD struct_type identifies the structure WORD length length of the structure in bytes Variable ............... depends on the function ............... ............... additional variables Example WORD send_sequence 0x0000 WORD rec_sequence 0x0000 WORD struct_type 0x0001 WORD length 0x0008

In the next section we will explain the individual structures and the corresponding values of the variables send_sequence, rec_sequence, struct_type and length, which are used to begin each packet. IO-Structure ReadRegister Sending this structure to the Web-IO causes it to send the status of the port to the user program. The packet consists only of these four WORDs. This structure is used only by the user program, and the Web-IO always responds by sending the structure AnalogRegisterState. IO-Structure AnalogRegisterState The Web-IO Analog-In/Out uses this structure to lsend the state of both ports. This structure is sent when the user pro- gram has sent the structure ReadRegister to the Web-IO, or when this structure was used to set an output value. This structure is also used for sending the output value of the port for the Web-IO Analog-In/Out. When the user program sends this structure to the Web-IO, the Web-IO sets the outputs according to the value sent on Port 1 and Port 2. Here the value is not transmitted in the configured units, but rather always in 1/1000 % of the current or voltage present. An output value of 15.4mA must be sent as 77000 x 1/1000 %, or 0x012CC8. When the Web-IO sends this structure to the user program, Port 1 and Port 2 have the value correspolnding to the input state. ReadDiagnosis WORD send_sequence always 0 (PC -> Web-IO) WORD rec_sequence always 0 WORD struct_type 0x00D1 WORD length 0x0008 AnalogRegisterState WORD send_sequence always 0 (Web-IO <-> PC) WORD rec_sequence always 0 WORD struct_type 0x01B8 WORD length 0x0014 LONG word_anz 2 LONG Port 1 Port1 State (in 1/1000 %) LONG Port 2 Port2 State (in 1/1000 %)

IO structure Send Mode This structure determines the trigger conditions the Web-IO Analog-In/Out uses to send the state of the ports to the user program. The trigger can be configured for state changes on both ports. The respective hysteresis for the trigger must be set in the Web configuration The following combinations can be configured as input_trigger variables: IO structure ReadDiagnosis If the Web-IO detects a communications or system error, the error is listed on the HTML page and can be read from the browser. Since error management via browser is not always available for program-controlled applications, the error status of the Web-IO can be polled using the structure ReadDiagnosis. In reply the Web-IO sends a Diagnosis type structure. IO structure Diagnosis The Web-IO sends the Diagnosis structure in reply to the ReadDiagnosis structure. SendMode WORD send_sequence always 0 (PC -> Web-IO) WORD rec_sequence always 0 WORD struct_type 0x0010 WORD length 0x000C WORD input_trigger 0x0000 - 0x0003 WORD interval Intervall data packets in 100ms Port 1 Port 2 0x0000 off off 0x0001 on off 0x0002 off on 0x0003 on on ReadDiagnosis WORD send_sequence always 0 (PC -> Web-IO) WORD rec_sequence always 0 WORD struct_type 0x00D1 WORD length 0x0008

are currently in the error log. The Web-IO differentiates a variety of different error states, whereby each set bit in the variables diag_errorbits0, diag_errorbits1 and diag_errorbits2 stands for an error type. The exact text description can be opened using TCP Port 80. IO structure ClearDiagnosis This structure is used to clear the error log in the Web-IO. IO structure Options This structure is used to set certain options in the Web-IO. 32 bits are available for this in the options variable. In the current version of the Web-IO only Bit 0 in the options variable is used. Diagnosis WORD send_sequence always 0 (Web-IO -> PC) WORD rec_sequence always 0 WORD struct_type 0x00D0 WORD length 0x001C LONG word_anz in this version 4 LONG diag_error_count quantity of pending errors LONG diag_errorbits0 binary error encoding LONG diag_errorbits1 LONG diag_errorbits2 ClearDiagnosis WORD send_sequence always 0 (PC -> Web-IO) WORD rec_sequence always 0 WORD struct_type 0x00D2 WORD length 0x0008 Options WORD send_sequence always 0 (PC -> Web-IO) WORD rec_sequence always 0 WORD struct_type 0x01F0 WORD length 0x0010 LONG word_anz in this version 1 LONG options binary option encoding

Bit 0 = 1 //The Web-IO returns the structure AnalogRegisterState when an output value is set. Bit 0 = 0 //The Web-IO sends no reply whyen an output value is set. To reliably receive the state in the reply after setting the output value(s), a time of at least 150ms should be kept between two output changing accesses.

the outputs of a second Web-IO and vice-versa. In this way you can for example send signals from one location to another ove a WAN connection. With Box-to-Box connections a Web-IO assumes the function of the Master. The second Web-IO operates as a Slave. The Slave waits for the Master to open the connection. Both the Master and the Slave Web-IO need to be correspondingly configured. 3.8.1 Configuring the Slave Web-IO m Necessary access rights: Administrator In the navigation tree of the Slave Web-IO select Config >> Device >> Basic Settings >> Binary 1

For Operation Mode set TCP-Server mode and activate Enable Binary. Then click on the Apply button to send the changes to the Web- IO. Now in the navigation tree select: Config >> Device >> Basic Settings >> Binary1 >> TCP-Server.

factory default set Port 49153 may be used. One reason for changing the factory default set local port may be for example a fireweall which permits access only to a particular port. 1 In any case the set local port on the Slave must be identical to the Server Port entry for the Master. Client HTTP Port Specifies which HTTP port to be used for opening the control connection to the Master box. Unless otherwise specified, always use Port 80 here. Binary Trigger: Here you activate the inputs which are to set the corresponding outputs on the Master. i The Web-IO Anaog-In/Out allows simultaneous access to the inputs from various modes.. This means for example that the inputs which control the outputs on the Master Web-IO can at the same time be read out over HTTP. Application Mode Select Box2Box Slave After all the parameters have been entered, confirm by clicking on the Apply button. Now in the navigation tree select: Config >> Ports >> Port 1 >> Output Mode

Activate the outputs to be set by the corresponding inputs on the Slave for Binary 1 and confirm by clicking on the Apply button. The outputs activated for Box-to-Box are no longer accessible for other modes. Next the new settings still need to be activated. Use the Logout button or select Config >> Session Control >> LogOut. 3.8.2 Configuring the Master m Necessary access rights: Administrator In the navigation tree select: Config >> Device >> Basic Settings >> Binary1 For Operation Mode select TCP-Client mode.

Now in the navigation tree select: Config >> Device >> Basic Settings >> Binary1 >> TCP-Client. The following parameters must be entered: Local Port: Unless otherwise specified by your network administrator, the factory default setting AUTO can be used. ServerPort: Here the Local Port set for the Slave must be entered. Here again the basic setting 49153 can be used unless otherwise specified by the network administrator. i Local Port and Slave Port do not necessarily have to be set the same as the factory default settings. One reason for changing the factory default settings for Local and Slave Port may be for example a fireweall which permits access only to a particular port. Server HTTP Port Specifies the HTTP port on which the control connection is to be opened to the Slave box. Unless otherwise specified, always use Port 80 here. Server IP Addr: Enter here the IP address of the Web-IO to be used as a Slave. Server Password: Here the administrator password of the Slave-IO is entered. If no password has been assigned for the Slave, this field remains blank. Inactive Timeout This parameter has no function in Box-to-Box mode, since a permanent connection is desired.

should set for the Slave. i The Web-IO Anaog-In/Out allows simultaneous access to the inputs from various modes.. This means for example that the inputs which control the outputs on the Master Web-IO can at the same time be read out over HTTP. Interval: If no interval is entered, the state of the inputs is sent to the outputs of the other respective Box-to-Box partner whenever there is a change. By entering an interval the state is also sent cyclically even when there is no change. 1 If two locations are connected to each other over a fee- based ISDN line, use of an interval is discouraged since the ISDN connection may either be never disconnected or often reopened depending on the timeout and interval. Application Mode Select Box2Box Master After all the parameters have been entered confirm by clicking on the Apply button. Now in the navigation tree select: Config >> Ports >> Port 1 >> Output Mode

Activate here the outputs which are to be set by the corresponding inputs on the Slave for Binary 1 and confirm by clicking on the Apply button. In contrast to the inputs, the outputs activated for Box-to-Box mode are no longer accessible for other modes. Now the new settings still need to be activated. Use the Logout button or select Config >> Session Control >> LogOut. After clicking on the Save button all the settings are updated in the Web-IO and the start page is reopened in the default user mode. The Master Web-IO attempts then to open a connection to the Slaqve Web-IO. All functions described here for Binary 1 can of course also be used under Binary 2. For example a Web-IO A in the Binary 1 area can be configured so that Input 1 operates Box to Box wi6th a Web-IO B. In the Binary 2 area Input 2 can then be configured so that it works together Box-to-Box with another Web- IO. 3.8.3 Determining Box-to-Box connection status m Necessary access rights: Administrator The connection status of a Box-to-Box connection can be queried using the navigation tree under Diag >> Test >> Out- put Config. Here you are shown in which mode the individual inputs are currently working. In addition the current status of a Box-to-Box connection is displayed in the footer of the Web page.

Box-to-Box mode only for the Master m Necessary access rights: Administrator Quitting Box-to-Box mode should always be done by configuring the Master correspondingly. Master and Slave Web-IO must be connected in the network. In the navigation tree select des Masters : Config >> Device >> Basic Settings >> Binary1 >> TCP Client and delete the entry for Server IP Addr. Also set Application Mode to Socket Client. Confirm by clicking on the Apply button. Then set under Config >> Device >> Basic Settings >> Binary1 >> den Operation Mode to TCP Server . Confirm by clicking on the Apply button. Now in the navigation tree for the Master select: Config >> Ports >> Port X >> Output Mode and set the outputs you want to operate Box-to-Box to HTTP. Confirm by clicking on the Apply button. Now the changed settings still need to be activated. Use the Logout button or select Config >> Session Control >> LogOut. After clicking on the Save button all the settings are updated in the Web-IO and the start page is reopened in the default user mode. Quitting Box-to-Box mode for the Slave Web-IO m Necessary access rights: Administrator In the navigation tree select des Slave: Config >> Device >> Basic Settings >> Binary1 >> TCP Server and set Application Mode to Socket Device. Confirm by clicking on the Apply button.

Nun In the navigation tree select Config >> Ports >> Port X >> Output Mode and set the outputs which are no longer to operate Box-to-Box to HTTP. Confirm by clicking on the Apply button. Now the changed settings still need to be activated. Use the Logout button or select Config >> Session Control >> LogOut. After clicking on the Save button all the settings are updated in the Web-IO and the start page is reopened in the default user mode. 3.8.5 Quitting Box-to-Box mode only for the Slave Web-IO If the Master is no longer available, for example because there is no network connection but you still want to deactivate Box- to-Box mode for the Slave, in the navigation tree select Config >> Session Control >> LogOut. The configuration frame contains an addition button called Stop Box2Box Slave.

The Web-IO is restarted. After logging in again and opening Config >> Session Control >> LogOut the Stopp Box2Box Slave button will be shown. Clicking on the button resets the Slave to Box-to-Box mode.

3.9 OPC - Standardized access OPC (OLE for Process Control) is a software interface for accessing process data based on OLE technology from Microsoft. Application programs such as visualization systems which use this interface are called OPC clients. On the opposite side of the interface are OPC servers. These are device drivers which represent certain hardware in abstract form as a set of OPC variables. The OPC server used here implements the specifications OPC Data Access 2.0 and Alarms & Events. The server controls devices in the W&T Web-IO product families, but also serial Com-Servers and the older Digital I/O Server. In terms of the architecture this is a system service running in the background and a monolithic application which contains the operating elements for configuration and diagnostics. 3.9.1 Installing the OPC-Server The OPC server can be found on the product CD included with the Web-IO, in the Web-IO Digital section. g On our Web site www.WuT.de you will find at left the „Article number search“ function. Enter here for example article number 57661, select „Tools“ from the field below and click on „Go.“. On the page that then opens select the link „OPC- Server.“ For ease of downloading the required files are compressed in a Zip file. Save the extracted file in any desired directory on your hard drive (e.g. C:/Temp). Start the setup program by for example selecting Run from the Start menu and then entering: „C\Temp\opc_en.msi“ (choose the version for your language). This installs and registers the OPC server on your computer. The OLE server name which OPC clients will need to specify later in order to connect to the server is: Wiesemann-Theis.Network-IO.

configure the server you can also run it manually. A corresponding entry W&T OPC-Server Version 4 can be found in the Start menu under „Programs.“ 3.9.2 Uninstalling You can remove the OPC server using the control panel component „Software.“ It is listed there under OPC-Server for network-I/O devices Version 4. 3.9.3 Configuring First start the OPC server. For normal installations you will find the corresponding start icon on your Windows interface under Start >> Programs >> W&T OPC-Server Version 4 Click on the Web-IO icon or in the menu on Device >> New I/O device. The following window opens:

Host name or IP address: Must agree with the IP address which was assigned to the unit. If there is also a DNS name for the address, you can also use this instead of a number combination. HTTP port: Should normally be 80 . The port number entered here is also used for opening the external brows er („Web-Browser“ button“) Device type: In case of doubt the „Identify“ function can help to select the proper type here. Some input fields with unneeded parameters may be deactivated after a selection is made. Passwort: Here you can enter the Config or the Administrator password which was specified for the unit. TCP-Port: The factory preset is for Port 49153. For the Web-IO Analog In/Out check the corresponding setting in the Web menu of the unit.

common (and unique) name component which you can specify here. Adjust timing: The amount of network traffic between the OPC server and devices depends essentially on the behavior of the OPC client: The more frequently a client requests updating of DA items, the more data must be sent over the network. If there is a need to eliminate an undesirably high network load, the OPC client would be the first place to start. There you could select any unnecessarily high update rate and choose not to subscribe to any OPC items which are not really essential. If this does not help (or if the behavior of the OPC client cannot be modified in these ways), a lower limit for the time between read accesses can be specified in the OPC server. The default is 100ms, but depending on the device type a significantly greater lower limit can be chosen. For example would be the typically change of measurements of temperature very slowly. For some types of OPC items (Example: the inputs on the Web- IO Analog) the device itself reports all changes, so that the OPC server does not need to perform any explicit read operations. But it does exactly that from time to time, namely in order to obtain a life sign from the device, since otherwise connection dropouts would not be reliably detected. The upper limnit for the time interval between read accesses determines how often (at minimum) this occurs. Processing multiple devices

You can also edit the timing parameters for multiple devices at the same time. In dialog fields whose content is not the same for all selected devices, a tilde („~“) is displayed. Fields in which the tilde remains even when closing the dialog field retain their various contents.

m Necessary access rights: Administrator In the navigation tree of the Web-IO select Config >> Device >> Basic Settings >> Binary 1 As Operation Mode set TCP-Server. Then click on the Apply button to send the changes to the Web- IO. Now in the navigation tree select: Config >> Device >> Basic Settings >> Binary1 >> TCP-Server.

Local Port: Unless otherwise specified by your network administrator, the factory default setting Port 49153 can be used. One reason for changing the factory default local part setting may be for example a firewall which only allows certain port accesses. I In any case the set local port on the Web-IO must be identical with the corresponding settings in the OPC server

Specifies the HTTP port on which the control connection to the OPC server should be opened. Unless otherwise specified, always use Port 80 here. Binary Trigger: Here you activate the inputs which should trigger a message to the OPC server when there is a state change. The hysteresis describes by how much the state must change in order for a message to be triggered. Application Mode Select OPC Device After all the parameters have been entered confirm by clicking on the Apply button. Now in the navigation tree select: Config >> Ports >> Port X >> Output Mode Activate here the output mask Binary 1 for the respective output and confirm by clicking on the Apply button. Now the new settings still need to be activated. Use the Logout button or select Config >> Session Control >> LogOut.

After clicking on the Save button all the settings are updated in the Web-IO and the start page is reopened in the default user mode. The Web-IO can now be accessed by the OPC server. 3.9.5 Program options After clicking on General options you can specify some details about the behavior of the OPC server. Release I/O devices: In this context „release“ means disconnecting the network connections to the devices so that other applications can again have access to them. Watchdog (VT_R8, R/W) is a global OPC variable, i.e. not associated with any any particular I/O device. It contains a seconds value which is continually counted down if this option is enabled. As soon as a value of 0 is reached, the I/O devices are released. Please note: Even if obviously only an OPC-DA client can prevent the watchdog from being turned off (by writing over and over a watchdog value other than zero, e.g. sending the value 15 every 10 seconds), both DA and A&E clients are also affected. If no OPC clients are still connected: Depending on the device type it may take a while (even several seconds for a Web- IO Digital!) until a closed connection can be opened again and the the OPC server resumes providing valid values. Limit update rate: An attempt to read values from a device at a faster rate than it can actually provide those values results in the OPC interface always finding itself in timeout situations. The affected DA variables then continually swing back and forth between OPC_QUALITY_GOOD and OPC_QUALITY_BAD, which makes them effectively useless. To avoid such a situation OPC clients are prevented by this parameter from setting too fast an update rate.

compromise between reliability and speed. Enter a higher value if the problems described still occur, or a lower value if you want to try out the highest possible update rate (for your special application case). The latter depends mainly on the device types used: Web-IO Analog-In/Out and any devices to which a permanent network connection is opened can be polled much faster than for example a Web-Thermometer.

3.9.6 Data model for OPC Data Access From the view of the OPC client an OPC-DA server provides a collection of named variables which can be read or written. Each variable is associated which a value, a time stamp and a signal quality, all of which are continually refreshed. In addition, vari- ables can have other attributes written to them, item properties which for example may contain physical units or a general comment text. Naming OPC variables The names of the OPC variables generally consist of several components, separated by decimal points, whereby each of these name components stands for a hierarchy level within a logical tree structure. A typical name would be for example „Box1.Analog.2“: „Box1“ is the device associated with the variable, „Analog“ refers to the ports on the device, and „2“ represents the second of the (numbered from 1 to 2) ports. The device names are freely selectable, and if needed the other name components can also be adapted to your own desires using the menu point „Change OPC item name.“ In addition to the variables for OPC-DA the dialog window „Edit OPC item names“ also shows for most devices the names of the event sources for OPC-A&E. Abbreviations The variable names on the following reference pages are shown abbreviated: The leading name component „Device name“, which varies in any case and therefore serves at best as an example, is always omitted. A variable shown as „Analog.1“ would in fact be accessed, depending on what kind of a device it is located on, as for example „Box1.Analog.1“.

and OLE data types: R/W: Read and wrote VT_BOOL: Binary value VT_I2, VT_I4: Whole number (16bit/32bit) R: Read-only VT_R8: Floating point number W: Write-only VT_BSTR: Character string 3.9.7 OPC variables for Web-IO Analog Each Web-IO Analog has two ports for current and/or voltage depending on the model. Configuration settings can also be used to scale a connected sensor, and instead of current or voltage the device then provides the measurement values of this sensor in any other physical unit. The OPC server does not determine which unit this is from the device until it is running, and correspondingly little can be said ahead of time about the associated variables: Analog.0 - 1 (VT_R8, R): Sensor measurement values. The unit is user-definable. The OPC client can read it out during run time as a text (e.g. „mA“) from the Item Properties. Web-IO Analog-In/Out provides two sensor values.

Please note also the general notes for describing the OPC vari- ables. 3.9.8 OPC Alarms & Events Various device types (described individually below) provide not only variables for OPC Data Access, but can also provide events for OPC Alarms & Events. Common to all of them are the following events which refer to the network connection between OPC server and the device: Event Category Message Event Type Severity Event Source 1 no network connection to the device Simple Event 200 Network 2 network connection established 180 Remarks · The same applies to the names of the Event Sources as to the data items of the OPC-DA server: Listed in the table are abbreviated names where the leading name component „Device Name“ is always omitted.

the OPC server and should therefore not be used as a filter criterion. · Whether the network connection to a particular device has a fault can be determined by an A&E client only after it has first received an event from this device, and you cannot know in adavance when this will happen, or whether it will happen at all. (It is not the case for examploe that newly connected clients are automatically greeted with an event from Category 1 or 2 for each device.). If this information needs to be reliably made available, it can be determined instead from the signal quality of the OPC-DA item of the affected device.

3.10.1 Time zone Define here the time zone where the device is located. The settings refer to UTC (Universal Time Coordinated). Then click on „Apply“. 3.10 Local time setting

into account, first enter the offset to UTC. The standard value (e.g. for Germany) is two hours. Enable this function using „Apply Summertime“ and apply the settings. Start/Stop Define when summer time begins and ends. The parameters are already preconfigured: Start: Last Sunday in March at 02:00 Stop: Last Sunday in October at 03:00

3.10.3 Device Clock If you do not wish to use a time server, you can set the clock manually here. Then click on „Logout“ and save your settings.

t h a t the time remains stored even after a device is turned off 3.11 Automatic time setting using a network time service 3.11.1 Time server If you want to use a time server to adjust the time, enter the necessary information here. The preset addresses are only an example and do not necessarily have to be used.

3.12 Configuring the data logger ! If you enter an address for a name, be sure that you have first configured the gateway and DNS server so that the device can resolve the addresses. Click on the „Logout“ button and save your settings.

Timebase: Defines at what time intervales the measurement data are stored in the data logger. The device will in any case measure a new value every four seconds. ! Note: If Timebase or Select Sensor are changed all the data in memory will be lost! Select Sensor: The sensor selected here is used for storing the values in the data logger

3.13.1 Basic Settings 3.13 Configuring the graphics output 3.12.2 Clear Clicking on the „Clear memory“ button clears the entire contents of the data logger.

measurements are automatically refreshed. The navigation buttons are not available for the Auto Scroll function. Show table: Shows the current values in table form as well. Show graph: Enables graph display of the measurements.

Show control buttons: Shows the navigation buttons. Show config menu: Shows the configuration menu for the graph display below the navigation buttons. Show alarm monitor: Uses a bar graph to show whether the alarm monitor for each alarm is active or inactive. Width: Enter here the desired width of the graph display Height: Enter here the desired height of the graph display. Frame Color: Enter here the desired color for the frame of the graph display, or select a color using the adjacent color selector: Background Color: Here you select the color of the background of the graph. This color is also used for the table display. Polling Rate: Enter here the desired polling rate of the graph display. The device provides a new value no sooner than every 0.5 seconds. Entering a value of less than 0.5 therefore has no effect.

Sensor X enable/disable: (Checkbox blank/filled in) Sensor Color: Enter the desired sensor color, or use the color selector to choose. Show extreme values: If a zoom level is selected in the graph display where a display point represents a measurement interval and not an individual measuring point, this function is used to show the maximum and minimum measured in this interval. If the zoom level is selected so that every measurement is shown, this function has no effect. If the function is disabled, the average of the displayed interval is represented. Scale 1 2 ... x: For multi-channel devices you can show multiple y-axes at the same time in the graph. These may represent for example different measurands. Specify here which scale you want to assign to the respective sensor. 3.13.2 Select Sensor

3.13.3 Scale Config Scale: The following parameters can be associated with the scale: unit: The unit to be shown for this scale. min: The lower value shown for this scale max: The upper value shown for this scale auto scale: The lower and upper values for this scale are automatically selected based on the measurement values, so that an optimal, dynamic representation can be achieved. If this function is enabled, the „min“ and „max“ parameters are ignored. auto fit: If this function is enabled the scale is corrected so that only whole-number values are shown on the display grid. Auto fit automatically enables the auto scale function.

access using the Control page: Pixel: Length of the slider in pixels Start: Lowest value that can be set using the slider. End: Highest value that can be set using the slider.

3.14 Calibration The sensor can be calibrfated using single-point and two-point reference measurements and corresponding entries for offset values. In single-point compensation the entered value is added to the measured valuem, whereas in two-point compensation a straight line is calculated for compensating the entire measuring range. To retain calibration setting, the user can store a comment text.

3.15.1 HTTP Startup: Specify here which HTML page you want displayed when the device starts up.

3.16 Sending alarms via e-mail 3.16.1 Basic Settings -> Mail Here the basic settings for e-mail sending are made. HTTP Port: You can use this port to access the device. The factory default setting is the standard HTTP port 80. If you want to use a different port, this may need to be explicitly names when opening the page: http://webio:

to one or more e-mail or SMS recipients. Name: Enter the name you want to appear for the e-mail recipient. ReplyAddr: The reply address the device uses to identify itself MailServer: In the next step enter the IP address of your mail server or its host name (for configured DNS servers) you want the