EUCHNER EKS Manual 

with USB Interface Order No. 094 485

Page 2/44 Subject to technical modifications 094485-04-11/13 Table of contents 1 General notes ............................................................................................................................................... 4 1.1 Use of the manual .................................................................................................................................. 4 1.1.1 Explanation of symbols .............................................................................................................. 4 1.1.2 Abbreviations ............................................................................................................................. 5 1.2 CE conformity ........................................................................................................................................ 5 1.3 Approvals ............................................................................................................................................... 5 1.4 Correct use ............................................................................................................................................ 6 1.5 Obligation on the operating organization ............................................................................................... 7 2 Safety precautions ...................................................................................................................................... 8 3 Function ........................................................................................................................................................ 9 3.1 Functional description ............................................................................................................................ 9 3.1.1 Common functions of EKS Standard and version EKS FSA ..................................................... 9 3.1.2 Additional functions of the version EKS FSA ........................................................................... 10 4 Technical data ............................................................................................................................................ 11 4.1 Dimension drawing of Electronic-Key adapter ..................................................................................... 11 4.1.1 Version EKS-A-IUX-G01-ST01 with USB interface ................................................................. 11 4.1.2 Version EKS-A-IUXA-G01-ST01/04 (EKS FSA) with USB interface ....................................... 11 4.2 Technical data, Electronic-Key adapter ............................................................................................... 12 4.3 Connector assignment ......................................................................................................................... 13 4.3.1 USB interface socket................................................................................................................ 13 4.3.2 Screw terminals of switching contacts LA1/LA2 and LB1/LB2 (only EKS FSA) ...................... 13 4.4 DIP switch settings ............................................................................................................................... 13 4.5 LED indicator ....................................................................................................................................... 13 5 Mounting ..................................................................................................................................................... 14 6 Electrical connection ................................................................................................................................ 15 6.1 USB connection ................................................................................................................................... 15 6.2 Connection of the semiconductor switching outputs (only for EKS FSA) ............................................ 15 6.2.1 Connection example with enabling switch (Cat. 3/PL d).......................................................... 16 6.2.2 Connection example without enabling switch .......................................................................... 19 7 Setup ........................................................................................................................................................... 22 7.1 Installation of the EKS USB drivers under Windows® XP .................................................................... 22 7.2 Installation of the EKS USB drivers under Windows® 7 ...................................................................... 26 7.3 Changing the virtual COM port and driver version information under Windows® ................................ 32 7.4 Uninstalling the EKS USB drivers under Windows® ............................................................................ 34 8 Operating the Electronic-Key-System with the aid of the virtual COM port ........................................ 36 8.1 Special features of the USB interface .................................................................................................. 36

094485-04-11/13 Subject to technical modifications Page 3/44 8.2 Communication .................................................................................................................................... 36 8.3 Basic message structure...................................................................................................................... 37 8.3.1 Special features of the 3964R data transfer protocol [1] ......................................................... 37 8.4 Commands for writing and reading a read/write Electronic-Key ......................................................... 39 8.4.1 Write process ........................................................................................................................... 40 8.4.2 Read process ........................................................................................................................... 41 8.4.3 Reading the serial number ....................................................................................................... 42 8.5 Command overview ............................................................................................................................. 42 8.6 Status numbers .................................................................................................................................... 42 9 Exclusion of liability .................................................................................................................................. 43 10 Service and repair ..................................................................................................................................... 43 11 Guarantee ................................................................................................................................................... 43 12 Bibliography ............................................................................................................................................... 43

Page 4/44 Subject to technical modifications 094485-04-11/13 1 General notes 1.1 Use of the manual This manual describes the technical features and the function of the EKS Electronic-Key adapter EKS-A-IUX-G01-ST01 with USB interface (order no. 092 750) as well as the version EKS-A-IUXA-G01-ST01/04, EKS For Safety Applications (EKS FSA, order no. 098 513). The complete evaluation and interface electronics for data transmission are integrated into these units. 1.1.1 Explanation of symbols The following symbols are used in this manual to identify important instructions and useful information. Danger! Identifies an immediate hazard. If not avoided, the consequence will be fatality or very serious injuries. Warning! Identifies a possible hazard. If not avoided, the consequence may be fatality or very serious injuries. Caution! Identifies a possible hazard. If not avoided, minor injuries or damage may result. Attention! Risk of damage to material or machine or degradation of function. Information! Important information is provided to the user here.

094485-04-11/13 Subject to technical modifications Page 5/44 1.1.2 Abbreviations The following abbreviations are used in this manual:  AC Alternating Current  BCC Block Check Character  CTS Clear To Send  DC Direct Current/Diagnostic Coverage  DIP Dual Inline Package  DLE Data Link Escape (acknowledgement)  E²PROM Electrically Erasable Programmable Read-Only Memory  EKS Electronic-Key-System  EKS FSA Electronic-Key-System For Safety Applications  ETX End of TeXt  FSA For Safety Applications  LED Light Emitting Diode  MTTFd Mean Time To Dangerous Failure  NAK Negative AcKnowledgement  PA PolyAmide  QVZ QuittungsVerzugsZeit (acknowdegement delay time)  ROM Read-Only Memory  STX Start of TeXt  USB Universal Serial Bus  ZVZ ZeichenVerzugsZeit (character delay time) 1.2 CE conformity The EKS Electronic-Key adapters with USB interface conform to the EMC directive 2004/108/EG (2004/108/EC, 2004/108/CE). The Electronic-Key adapters comply with the following European/international standards:  EN 55011 Industrial, scientific and medical equipment - Radio-frequency disturbance characteristics - Limits and methods of measurement  EN 61000-6-2 Electromagnetic compatibility (EMC) - Part 6-2: Generic standards - Immunity for industrial environments 1.3 Approvals The EKS Electronic-Key adapters with USB interface are certified in accordance with (UL File Number E240367). For use and operation as per the requirements, a power supply for use in class 2 circuits must be used.

Page 6/44 Subject to technical modifications 094485-04-11/13 1.4 Correct use As part of a higher-level overall system, the EKS Electronic-Key adapter is used for access control and monitoring on PC-based control systems or parts of control systems for machine installations. EKS can be used, for example, as part of an overall system for checking access rights for operating mode selection. However, it is not permitted to directly derive the operating mode from the access rights on the Electronic-Key. If the selection of the operating mode is relevant for safety, this must not be performed by means of the EKS; instead an additional device must be used to select the operating mode. This is possible via the graphical user interface on the control system, for example. The version EKS FSA has outputs that can be utilized to form a safe shut-down signal (for block diagram see section 3.1.2). For this purpose a safe evaluation must be included downstream. The EKS FSA can then be used for safety-related tasks. The machine must be reset to a safe operating mode by removing the Electronic- Key. A hazard analysis on this aspect must be prepared as per the requirements in the machinery directive. The risk and the necessary risk minimization by technical means must be determined using a suitable standard. The following requirements must be met for usage:  The data signal (channel LB) and the switched output LA1/LA2 (channel LA) must be polled by a safe downstream evaluation to suit the risk determined. The data line (channel LB) is used to supply the information as to whether or not an Electronic-Key is inserted and which access rights are assigned to the Electronic-Key. The output LA1/LA2 (channel LA) is used for the redundant supply of the information as to whether or not an Electronic-Key is inserted (independent of the access rights). The data line or, alternatively, the switched output LB1/LB2 can be used as channel LB. The output LB1/LB2 is used to supply (like LA1/LA2) only the information as to whether or not an Electronic-Key is inserted (independent of the access rights). The usage of the output LB1/LB2 is optional.  The control system must check whether the Electronic-Key inserted is authorized to select the operating mode and whether the access rights on the Electronic-Key permit operation in the operating mode currently selected.  The user must select the related operating mode using the control system or another suitable circuit.  The manufacturer of the system must check which safety level is reached with the overall system and whether the overall system provides adequate safety against hazards in the intended application. Information! The machinery directive 98/37/EC provides information on selection of the operating mode. It is imperative that this information be followed. When designing machines and using the Electronic-Key adapter, the national and international regulations and standards specific to the application must be observed, e.g.:  EN 60204, Safety of machinery - Electrical equipment of machines  EN 12100-1, Safety of machinery - Basic concepts, general principles for design - part 1: basic terminology, methodology  EN 954-1, Safety of machinery. Safety related parts of control systems - part 1: general principles for design  EN 62061, Safety of machinery – Functional safety of safety-related electrical, electronic and programmable electronic control systems  EN ISO 13849-1, Safety of machinery. Safety related parts of control systems - part 1: General principles for design Modifications to the electronics of the Electronic-Key adapter and any other changes, especially mechanical modifications and reworking, are not permissible and will result in the loss of the warranty and exclusion of liability.

094485-04-11/13 Subject to technical modifications Page 7/44 The Electronic-Key adapter must only be employed and used in accordance with  this manual and  other documentation referred to in this manual. The EKS Electronic-Key adapter is not a safety component in the sense of the machinery directive. Without additional precautions the EKS Electronic-Key adapter must not be used to provide a safety function, particularly if failure or malfunction of the unit could endanger the safety or health of people in the operating area of a machine. 1.5 Obligation on the operating organization The manufacturer and the organization operating the higher-level overall system, e.g. a machine installation, are responsible for the observance of national and international safety and accident prevention regulations applicable in the specific case.

Page 8/44 Subject to technical modifications 094485-04-11/13 2 Safety precautions Warning! The EKS Electronic-Key adapter is not a safety component in the sense of the machinery directive. Without additional precautions the EKS Electronic-Key adapter must not be used to provide a safety function, particularly if failure or malfunction of the unit could endanger the safety or health of persons in the operating area of a machine. On this topic pay particular attention to the sections Correct use (see section 1.3) and Electrical connection (see section 6). Warning! Mounting and electrical connection are only allowed to be performed by authorized personnel who are familiar with the applicable regulations on accident prevention and have read and understood this manual. Furthermore, installation and electrical connection of the version EKS FSA must be performed only by personnel familiar with handling safety components. Caution! Modifications to the electronics of the Electronic-Key adapter and any other changes, especially mechanical modifications and reworking, are not permissible and will result in the loss of the warranty.

094485-04-11/13 Subject to technical modifications Page 9/44 3 Function 3.1 Functional description 3.1.1 Common functions of EKS Standard and version EKS FSA The EKS is used for access control and monitoring on PC-based control systems or parts of control systems for machine installations. Instead of passwords, coded Electronic-Keys are assigned. In this way unauthorized access to control and display systems is prevented to the greatest possible extent. The EKS uses a non-contact, inductive read/write identification system. It comprises:  Electronic-Key  Electronic-Key adapter The user is responsible for organizing the programming of the application, integration in an overall system and the assignment and use of the freely programmable memory in the Electronic-Key. Information! For easier organization and management of your Electronic-Keys and the data they contain, EUCHNER also offers the Electronic Key Manager (EKM) software. The Electronic-Key adapter is a read/write system with integrated evaluation electronics and interface. Due to the non-contact transfer of data, from the access side the Electronic-Key adapter has the high degree of protection of IP 67, i.e. it is suitable for industrial use. The Electronic-Key adapter can be installed in accordance with DIN 43700 in any control panel with a standard cut-out of 33 mm x 68 mm. The Electronic-Key adapter is fastened by means of screw clamp elements from the rear side of the panel in order to exclude unauthorized tampering from the operator side. The system is connected via the integrated USB interface that is designed as a virtual COM port in Windows®- based systems. The power supply is also provided via the USB connection. Setup and system integration can be realized straightforwardly and quickly on the Electronic-Key adapter with USB interface. Data communication is in accordance with the transfer protocol 3964R. On read/write Electronic-Keys with 116 bytes, the memory is organized in 4-byte blocks. This means a multiple of 4-byte sized blocks must always be written. The current state of the Electronic-Key adapter is displayed using a 2-color LED. The Electronic-Keys are tag shaped. The complete transponder with memory chip and antenna is integrated into the Electronic-Key. The transponder does not have a battery.

Page 10/44 Subject to technical modifications 094485-04-11/13 For operation, the Electronic-Key is inserted in the Electronic-Key adapter and is held in place by a spring clip. The power supply for the transponder and the data are transferred contactlessly between the Electronic-Key adapter and Electronic-Key. Figure : Cut-away illustration of Electronic-Key adapter The data carrier in the Electronic-Key is equipped with a combined memory:  116 bytes E2PROM (programmable) plus 8 bytes ROM (serial number) 3.1.2 Additional functions of the version EKS FSA The version EKS FSA has two additional semiconductor relay outputs (LA1/LA2 and optionally LB1/LB2) that are switched off as long as there is no Electronic-Key in the Electronic-Key adapter or if it is not possible to read the Electronic-Key. The semiconductor relay outputs are electrically isolated from the device electronics and from each other. Either AC or DC can be switched. Each of the outputs is operated with diversity by a dedicated processor that switches off the outputs on removal of the Electronic-Key (see Figure Block diagram EKS FSA). Figure: Block diagram EKS FSA By separately evaluating channel LA and channel LB, the EKS FSA device can be used in conjunction with a safe evaluation device in safety-related applications. Integrated voltage monitoring switches off the switching contacts LA and LB if the power supply drops below 4.5 V or exceeds 5.5 V. Information! The switching contacts FSA close when the Electronic-Key is inserted, irrespective of the data allocation on the memory.

094485-04-11/13 Subject to technical modifications Page 11/44 4 Technical data 4.1 Dimension drawing of Electronic-Key adapter For installation in a control panel you must provide a cut-out 33 mm x 68 mm according to DIN 43700. 4.1.1 Version EKS-A-IUX-G01-ST01 with USB interface 4.1.2 Version EKS-A-IUXA-G01-ST01/04 (EKS FSA) with USB interface

Page 12/44 Subject to technical modifications 094485-04-11/13 4.2 Technical data, Electronic-Key adapter Attention! All the electrical connections must either be isolated from the mains supply by a safety transformer according to EN IEC 61558-2-6 with limited output voltage in the event of a fault, or by other equivalent isolation measures. Value Unit min. typ. max. General parameters Housing Plastic (PA 6 GF30 gray) Degree of protection acc. to EN 60529 IP 67 in mounted condition Ambient temperature 0 + 55 °C Mounting cut-out according to DIN 43700 33 x 68 mm Power supply Via USB Current consumption 100 mA Interface, data transfer Interface to the PC USB full speed (USB 1.1 and USB 2.0 compatible) Transfer protocol 3964R Data transfer rate 9.6 kbaud Data format 1 start bit, 8 data bits, 1 parity bit (even parity), 1 stop bit USB interface connection Type B Cable length 3 m LED indicator green "Ready" (in operation) yellow "Electronic-Key active" * FSA Version (For Safety Applications) – parameters for floating semiconductor switching contacts LA and LB Power supply U for load (LA, LB) 24 30 V Switching current (with overload protection) 1 10 50 mA Output voltage UA (LA, LB) in switched state U x 0.9 U V Resistance in switched state 35 Ohm Capacitive load 1 µF Utilization category according to AC-12 EN IEC 60947-5-2 AC-15 DC-12 DC-13 50 mA / 24 V Difference time between outputs** (LB first) 200 ms Connection screw terminals, 2 x 2-pole 0.14 1.5 mm² Reliability values according to EN ISO 13849-1 (only FSA version) Category (with connected safe evaluation) 3 MTTFd Evaluation of data channel and one switching contact LA 416 years Evaluation of data channel and both switching contacts LA and LB 803 years DC 92 % * The LED illuminates yellow if there is a functional Electronic-Key in the Electronic-Key adapter. ** If access to the USB interface takes place during the insertion or removal of the Electronic-Key, the difference time can be more than 200 ms.

094485-04-11/13 Subject to technical modifications Page 13/44 4.3 Connector assignment 4.3.1 USB interface socket The socket on the Electronic-Key adapter is designed as USB type B. 4.3.2 Screw terminals of switching contacts LA1/LA2 and LB1/LB2 (only EKS FSA) Information! The coded plug for the connection of the switching contacts is included with the Electronic-Key adapter. Coded plug 2 x 2-pole with screw terminals Cond. cross-section 0.14 … 1.5 mm² Tightening torque 0.22 Nm Channel Pin Function LA 1 Normally open contact channel LA 2 LB 1 Normally open contact channel LB 2 4.4 DIP switch settings Using the DIP switches S1 to S8, various parameters can be set. Write protection can be enabled using DIP switch S1. In this way the writing of data to the read/write Electronic- Key is prevented. The settings are only applied when the power supply is switched on. DIP switches, 8-pole: 1 2 3 4 5 6 7 8 ON DIP switch Functions Factory setting S8 OFF = read/write Electronic-Key ON = read-only Electronic-Key* OFF S7 OFF S6 OFF S5 OFF S4 OFF S3 OFF S2 OFF S1 ON = write protection for read/write Electronic-Key OFF * The read-only transponder type can also be read using the Electronic-Key adapter with USB interface. However, we do not recommend using this transponder type in new installations. The read-only transponder cannot be used in conjunction with the version EKS FSA. Information! It is imperative that all DIP switches without a function (S2 to S7) are set to OFF! In this way problems with any functions added in the future will be avoided. 4.5 LED indicator The Electronic-Key adapter operating states are indicated using a 2-color LED on the front. The illumination of the LED in any color indicates the presence of the operating voltage. Color Operating state Description Green Ready Electronic-Key adapter supplied with power and ready. Yellow Electronic key active There is an Electronic-Key in the Electronic-Key adapter and it has been detected.

Page 14/44 Subject to technical modifications 094485-04-11/13 5 Mounting Warning! Mounting must be performed only by authorized personnel. Attention! To achieve the degree of protection IP 67, it is necessary to install the key adapter in a clean, flat metal plate at least 2 mm thick and to tighten the screws with a tightening torque of 0.25 ... 0.35 Nm. A suitable strain relief must be provided for the connection cables in order to avoid damage to the connection sockets or malfunctions. The Electronic-Key adapter is intended for mounting in control panels with a cut-out measuring 33 mm x 68 mm according to DIN 43700 (see section 4.1). The device is fastened using screw clamp elements from the rear side of the panel. Information! The screw clamp elements for front panel mounting are included with the Electronic-Key adapter. 1. Insert Electronic-Key adapter, with seal already bonded in place, into the mounting cut-out from the front. 2. Insert screw clamp elements in the housing of the Electronic-Key adapter from the side up to the stop and tighten with 0.25 …0.35 Nm. Attention! The device may be damaged if the tightening torque applied exceeds 0.35 Nm. 3. After mounting, again check the Electronic-Key adapter for firm seating and correct sealing of the front panel.

094485-04-11/13 Subject to technical modifications Page 15/44 6 Electrical connection Attention! If connected incorrectly, the Electronic-Key adapter may be damaged.  Observe electrical characteristics and terminal assignment (see section 4).  When installing connections, the operating organization must ensure compliance with the EMC safety requirements in accordance with EN 55011 and EN 61000-6-2.  Do not lay connection cables in the immediate vicinity of sources of interference. 6.1 USB connection The interface for the Electronic-Key adapter is compatible with the standards USB 1.1 and USB 2.0. Information!  Only a USB 1.1 or USB 2.0 cable with a maximum length of 3 m is allowed to be used for the connection cable.  The Electronic-Key adapter must always be connected to the same USB port to ensure the correct allocation of the virtual COM port in Windows®-based systems.  If a USB hub is connected in between, or the Electronic-Key adapter must be moved, a new COM port allocation must be made. This action can only be performed with administrator rights (only for Windows®). 6.2 Connection of the semiconductor switching outputs (only for EKS FSA) Warning! Incorrect connection or errors in the safety-related integration of the EKS FSA can lead to fatal injury. For this reason, observe the following safety aspects:  It is not possible to generate a safe signal by using only the switching contacts LA1/LA2 and LB1/LB2. Safe, downstream evaluation is always necessary (e.g. using a safety relay). Use of the switching contact LB1/LB2 as an alternative to the data line is optional.  The safe evaluation must always be dual-channel. For this purpose, there are two alternatives: • Evaluation of switching contact LA1/LA2 as channel LA together with an evaluation of the data line as channel LB (recommended) • Evaluation of switching contact LA1/LA2 as channel LA together with switching contact LB1/LB2 as channel LB  If possible, integrate the EKS FSA as defined in the following connection examples from EUCHNER. Information! With EKS version FSA, safe shutdown can be achieved by the dual-channel feature according to category 3 as per EN ISO 13849-1. For this purpose a safe evaluation must be included downstream. The machine must be reset to a safe operating mode after removal of the Electronic-Key, i.e. automatic mode with closed safety guard. For this safe shutoff, Performance Level PL d can be achieved in the overall system. Attention! The power is supplied via the USB connection. If the power supply drops below 4.5 V or exceeds 5.5 V, the switching contacts LA1/LA2 and LB1/LB2 are switched off.

Page 16/44 Subject to technical modifications 094485-04-11/13 6.2.1 Connection example with enabling switch (Cat. 3/PL d) Figure: Principle of operation (illustration with selected operating mode and all components in actuated position) 6.2.1.1 Description of the application example with enabling switch The danger area on a machine is secured with a fence. To make set-up work on the machine possible with the safety door open, an EKS FSA system is integrated in conjunction with a control system, an enabling switch and a safety relay. The safety relay must comply with the following requirements:  Detection of short-circuits and earth faults. A short-circuit can be detected in the safety path in the circuit described due to the fact that both the positive path and earth path of the safety relay are switched. In this case, the safety relay deactivates its safety outputs.  Simultaneity monitoring: The safety relay must detect whether the safety inputs are switched practically simultaneously. If this is not the case, the safety outputs are not switched and the unit switches to fault state. A renewed start is possible only after the enabling switch has been released and then operated again. The switching contact LA1/LA2 is closed after the insertion of the Electronic-Key. The EKS FSA is coupled with a PC. After the insertion of the Electronic-Key, the control system checks whether the key is authorized for work in the selected operating mode. If this is not the case, the operating mode cannot be set. If suitable access rights are available, the control system gives the instruction to the switching contact A100.0 to close.

094485-04-11/13 Subject to technical modifications Page 17/44 The switching contact LA1/LA2, in series with a switching contact on the enabling switch, is connected to the first input on the safety relay. The switching contact A100.0 is connected to the second input on the safety relay in series with the second switching contact on the enabling switch. The result is that these inputs on the safety relay are only enabled if  the EKS-FSA (switching contact LA1/LA2) and  the control system (switching contact A100.0) issue the related enabling signal and  the enabling switch is actuated. The output contacts on the safety relay are enabled only after actuation of the enabling switch. The safety relay is de-energized without a time delay (stop category 0) and the machine movement is stopped if  the Electronic-Key is removed or  the enabling switch is released or  the machine control system cancels the enable state (contact A100.0 is opened). Information! The control system output A100.0 is only allowed to be set if  the related Electronic-Key is inserted and  a suitable operating mode is selected. 6.2.1.2 Feedback loop The safety relay can be started only with the feedback loop closed. A welded contactor contact in the enable path will thus be detected when a start request is made and a start is then prevented. The power contactor must have positively driven contacts. 6.2.1.3 Start The safety relay start is given after enabling by the EKS FSA and by the control system, and after operation of the enabling switch.

Page 18/44 Subject to technical modifications 094485-04-11/13 6.2.1.4 Circuit diagram Figure: Circuit diagram with enabling switch

094485-04-11/13 Subject to technical modifications Page 19/44 6.2.2 Connection example without enabling switch Figure: Principle of operation (illustration with selected operating mode and all components in actuated position) 6.2.2.1 Description of the application example without enabling switch The danger area on a machine is secured with a fence. To make set-up work on the machine possible with the safety door open, an EKS FSA system is integrated in conjunction with a control system and a safety relay. The safety relay must comply with the following requirements:  Detection of short-circuits and earth faults. A short-circuit can be detected in the safety path in the circuit described due to the fact that both the positive path and earth path of the safety relay are switched. In this case, the safety relay deactivates its safety outputs.  Simultaneity monitoring: The safety relay must detect whether the safety inputs are switched practically simultaneously. If this is not the case, the safety outputs are not switched and the unit switches to fault state. A renewed start is possible only after the key has been inserted again.  Start button monitoring: The safety relay must detect when the start button is welded or jammed at the latest at the next start. If this is the case, the safety outputs are not switched and the unit switches to fault state. This prevents accidental starting of the system. The switching contact LA1/LA2 is closed after the insertion of the Electronic-Key. The EKS FSA is coupled with a PC. After the insertion of the Electronic-Key, the control system checks whether the key is authorized for work in the selected operating mode. If this is not the case, the operating mode cannot be set. If suitable access rights are available, the control system gives the instruction to the switching contact A100.0 to close. The switching contact LA1/LA2 of the EKS FSA is connected to the first input on the safety relay. The switching contact A100.0 on the control system is connected to the second input on the safety relay. The control contact A100.0 and the switching contact LA1/LA2 are monitored for simultaneity.

Page 20/44 Subject to technical modifications 094485-04-11/13 The safety relay is de-energized without a time delay (stop category 0) and the machine movement is stopped if  the Electronic-Key is removed or  the machine control system cancels the enable state (switching contact A100.0 is opened). Information! The switching contact A100.0 is only allowed to be set if  the related Electronic-Key is inserted and  a suitable operating mode is selected. 6.2.2.2 Feedback loop The safety relay can be started only with the feedback loop closed. A welded contactor contact in the enable path will thus be detected when a start request is made and a start is then prevented. The power contactor must have positively driven contacts. 6.2.2.3 Start The safety relay start is given after enabling by the EKS FSA and by the control system, and after operation of the start button.

094485-04-11/13 Subject to technical modifications Page 21/44 6.2.2.4 Circuit diagram Figure: Circuit diagram without enabling switch

Page 22/44 Subject to technical modifications 094485-04-11/13 7 Setup Perform setup in the following sequence: 1. Set the DIP switches on the Electronic-Key adapter (see section 4.4 DIP switch settings). 2. Check whether mounting and electrical connection are correct (see section 5 Installation and section 6 Electrical connection). 3. After connecting the USB connection cable and installation of the EKS USB drivers, the LED on the front of the Electronic-Key adapter illuminates green. This indicates that the power supply is present. 4. Insert Electronic-Key in the Electronic-Key adapter. The LED changes to yellow. 5. Important: for the version EKS FSA, all safety functions must also be thoroughly tested. 7.1 Installation of the EKS USB drivers under Windows® XP To start the installation, have the driver software order no. 094376 at hand in a folder or on a data carrier.  For installation from CD, insert the CD now. In the routine described in the following, first a driver for the EUCHNER Electronic-Key-System USB is installed and then a driver for the virtual serial COM port. Information! The user must be logged on as an administrator in order to install or uninstall the drivers.  After the Electronic-Key adapter is plugged into a spare USB port, the following message appears:  The Found New Hardware Wizard is started automatically:

094485-04-11/13 Subject to technical modifications Page 23/44  Click on Next.  When this message is displayed, click on Continue Anyway.  The EKS USB driver is installed.

Page 24/44 Subject to technical modifications 094485-04-11/13  Click on Finish. After the installation of the EKS USB driver, a virtual COM port driver must be installed. The following message appears:  The Found New Hardware Wizard is started automatically:  Click on Next.

094485-04-11/13 Subject to technical modifications Page 25/44  When this message is displayed, click on Continue Anyway.  The virtual COM port driver is installed.  When the installation process is complete, the following is displayed:  Click on Finish.

Page 26/44 Subject to technical modifications 094485-04-11/13 7.2 Installation of the EKS USB drivers under Windows® 7 To start the installation, have the driver software order no. 094376 at hand in a folder or on a CD.  For installation from zip file, extract it to a folder of the computer now (e.g. to C:\Temp\) or alternatively  For installation from CD, insert the CD now. In the routine described in the following, first a driver for the EUCHNER Electronic-Key-System USB is installed and then a driver for the virtual serial COM port. Information! The user must be logged on as an administrator in order to install or uninstall the drivers.  Start driver installation by launching the Device Manager via Windows Start… and entering the following in the Search programs and files box: devmgmt.msc  Click on devmgmt.msc The EKS USB device driver will be installed in the first step.  Now plug the Electronic-Key adapter into a unoccupied USB port. Windows will now typically display a message in the task bar stating that it is looking for device driver software. The EUCHNER Electronic-Key-System USB driver will not be installed automatically. Instead, this is done manually as follows. Close this window if necessary.

094485-04-11/13 Subject to technical modifications Page 27/44  Find the entry EUCHNER Electronic-Key- System USB. Right-click on the entry and select Update Driver Software…  Select Browse my computer for driver software For installation from folder:  Enter the path to the folder containing the drivers. Also tick the Include subfolders check box. Click on Next

Page 28/44 Subject to technical modifications 094485-04-11/13 For installation from CD:  Select the drive. Also tick the Include subfolders check box.  Click on OK and Next  Confirm the Windows security message with Install this driver software anyway The driver software for EUCHNER Electronic-Key- System USB will be installed, and the following message will appear after completion: Windows has successfully updated your driver software.  Close this window.

094485-04-11/13 Subject to technical modifications Page 29/44 An entry now appears in the list of USB controllers: EUCHNER Electronic-Key-System USB Information! This entry is visible only if the Electronic-Key adapter is inserted. The virtual serial COM port driver is additionally installed in the second step. Windows will now typically display another message in the task bar stating that it is looking for device driver software. The USB Serial Port driver will not be installed automatically. Instead, this is done manually as follows. Close this window if necessary.  Find the entry USB Serial Port. Right-click on the entry and select Update Driver Software…

Page 30/44 Subject to technical modifications 094485-04-11/13  Select Browse my computer for driver software For installation from folder:  Enter the path to the folder containing the drivers. Also tick the Include subfolders check box.  Click on Next For installation from CD:  Select the drive. Also tick the Include subfolders check box.  Click on OK and Next Confirm the Windows security message with Install this driver software anyway

094485-04-11/13 Subject to technical modifications Page 31/44 The driver software for EUCHNER Electronic-Key- System USB (COM#) (virtual serial COM port) will be installed, and the following message will appear after completion: Windows has successfully updated your driver software.  Close this window. An additional entry now appears in the list of Ports (COM & LPT): EUCHNER Electronic-Key-System USB (COM#). The automatically assigned COM port number ("3" in this example) also appears in the list of ports. The application can communicate with the device using this COM port. Information! This entry is visible only if the Electronic-Key adapter is inserted.

Page 32/44 Subject to technical modifications 094485-04-11/13 7.3 Changing the virtual COM port and driver version information under Windows® Information! To be able to change a COM port number, you must be logged on as an administrator. Information! This is possible only if an Electronic-Key adapter is inserted. Under Windows® 7:  Start the process by launching the Device Manager via Windows Start… and entering the following in the Search programs and files box: devmgmt.msc  Click on devmgmt.msc Under Windows® XP:  Start the process by launching the Device Manager via Windows Start/Run… and entering the following in the Open box: devmgmt.msc  Click on OK  Find the following entry in the Ports (COM & LPT) list: EUCHNER Electronic-Key-System USB (COM#).  Right-click on the entry and select Properties

094485-04-11/13 Subject to technical modifications Page 33/44  In the EUCHNER Electronic-Key-System USB (COM#) Properties, select the tab Port Settings Selecting Advanced... opens a window in which the virtual COM port can be changed. The desired virtual COM port can be selected in the COM Port Number: selection field. Confirm with OK The change is then immediately visible in the Device Manager. Now unplug the USB cable and plug it back in again. This activates the change. Information! The EKS communicates with the user software over the COM port selected here. Information! This COM port also must be selected in the ActiveX module, for example. The Driver tab displays the installed driver version (1.3.0.0 in this example)

Page 34/44 Subject to technical modifications 094485-04-11/13 7.4 Uninstalling the EKS USB drivers under Windows® Information! The user must be logged on as an administrator in order to uninstall the EKS USB drivers. Information! This is possible only if an Electronic-Key adapter is inserted. Under Windows® 7:  Start the uninstalling process by launching the Device Manager via Windows Start… and entering the following in the Search programs and files box: devmgmt.msc  Click on devmgmt.msc Under Windows® XP:  Start the uninstalling process by launching the Device Manager via Windows Start/Run… and entering the following in the Open box: devmgmt.msc  Click on OK  Find the following entry in the Ports (COM & LPT) list: EUCHNER Electronic-Key-System USB (COM#).  Right-click on the entry and select Uninstall

094485-04-11/13 Subject to technical modifications Page 35/44  Confirm the uninstalling process for the EUCHNER Electronic-Key-System USB (COM#) by ticking the check box Delete the driver software for this device  Click on OK  Find the following entry in the list of USB controllers: EUCHNER Electronic-Key-System USB.  Right-click on the entry and select Uninstall  Confirm the uninstalling process for the EUCHNER Electronic-Key-System USB by ticking the check box Delete the driver software for this device.  Click on OK

Page 36/44 Subject to technical modifications 094485-04-11/13 8 Operating the Electronic-Key-System with the aid of the virtual COM port 8.1 Special features of the USB interface The USB interface is designed as a virtual serial COM port. The communication is exactly the same as for the device with serial RS232 interface. If there is an Electronic-Key within the operating distance of the Electronic-Key adapter, the LED on the front changes from green to yellow. At the same time the CTS handshake signal changes from inactive (0) to active (1). This signal corresponds to the CTS / OUT signal with RS232 level on the Electronic-Key adapter with serial interface. This signal can be used for control purposes to detect whether there is an Electronic-Key in the Electronic-Key adapter. 8.2 Communication This section primarily describes communication between a PC and the Electronic-Key adapter (referred to as the device in the following). Communication with the Electronic-Key adapter is performed via a virtual COM port. The commands are sent over this COM port. It is possible to communicate with several devices over different COM ports. In principle COM 1 to COM 128 can be used. The transfer messages for the commands  Program (write) Electronic-Key  Read Electronic-Key are based on the transfer protocol 3964R [1] Integration of the Electronic-Key Adapter with USB interface into the user’s PC application is supported by an optionally available ActiveX module (order no. 098 708) (usable for MS Windows based programs with ActiveX capability). EKS can thus be used in conjunction with process visualization. The ActiveX module is used as a protocol driver for the 3964R data transfer protocol described in the following.

094485-04-11/13 Subject to technical modifications Page 37/44 8.3 Basic message structure Every command and any related data blocks are transferred from and to the Electronic-Key adapter in a message core within the message frame as per the protocol 3964R (Figure 1: Basic command structure in the 3964R protocol). In the 3964R protocol, the recipient acknowledges the message received by sending back an acknowledgement character (DLE). If the acknowledgement is negative (NAK), the complete protocol is repeated. If it is not possible to correctly transfer the protocol after a total of six attempts, the process is aborted. Description Byte no. Transmit data in ASCII format Acknowledge- ment from the recipient + - Connection setup 3964R procedure start STX DLE NAK Message core Number of message bytes 0 Command identification 1 2 T or R command Device address 3 01hex User data description 4 5 6 Start address Start address Number of items of data User data 7 ... n Connection termination 3964R procedure termination DLE ETX BCC DLE NAK Figure 1: Basic command structure in the 3964R protocol 8.3.1 Special features of the 3964R data transfer protocol [1] The 3964R data transfer protocol is a comparatively reliable procedure for the electronic exchange of data between PC/control system and a peripheral connected, because the data transfer is performed using a standardized protocol. 8.3.1.1 Basic information on data transfer procedures using a protocol [1] Numerous conventions must be agreed for a data transfer procedure; codes, operating modes, transfer speeds and the algorithmic process for the transfer. The definition of this algorithmic process is termed the transfer protocol (for short: protocol). A transfer protocol in general defines the following phases of the data transfer:  Connection setup: request from A to B for the transfer of data  Data transfer from A to B  Connection termination: conclusion of the transfer of data

Page 38/44 Subject to technical modifications 094485-04-11/13 8.3.1.2 The 3964R transfer protocol [1] Unlike protocol-free data transfer procedures, 3964R is a data transfer with protocol. This means that the actual data that need to be transferred are enclosed in specific control characters. The 3964R driver permits comparatively reliable data transfer as the recipient must signal to the sender readiness to receive (connection setup) and acknowledge correct reception after completion of the data transfer. With the 3964R transfer protocol, data integrity is increased by an additional block check character. The 3964R driver interprets the following control characters:  DLE (10hex) Data Link Escape  STX (02hex) Start of Text  NAK (15hex) Negative Acknowledgement  ETX (03hex) End of Text At the end of each data block in the 3964R transfer protocol, a block check character (for short: BCC) is sent to assure data integrity. The block check character is the even longitudinal parity (XOR operator on all data bytes) of a block sent or received. The block check character is formed starting with the first byte of the message core after the connection is set up and ends after the characters DLE and ETX during connection termination. 8.3.1.3 The control system sends [1] To set up the connection, the control system sends the control character STX. If, before the acknowledgement delay time (ADT, typically: 2 s) elapses the peripheral responds with the control character DLE, the control system switches to transfer mode. If the peripheral responds with the control character NAK, any other character (except DLE) or the acknowledgement delay time elapses without a reaction, the attempt to set up the connection has failed. After a total of six unsuccessful attempts (3964R protocol specification) the process is aborted. If the attempt to set up the connection is successful, the characters with the information as contained in the send buffer in the control system are transferred to the peripheral at the selected transfer speed. The peripheral monitors the amount of time between the incoming characters. The gap between two characters must not be more than the character delay time (CDT, typically: 100 ms). All 10hex values contained in the message core must be sent twice so that the recipient recognizes that data is being transferred here and not the control character DLE (DLE duplication). After the user data has been sent, the control system adds the following characters as an end identifier: DLE ETX BCC. Then the control system waits for an acknowledgement character from the peripheral. If the peripheral sends the control character DLE within the acknowledgement delay time (ADT, typically: 2 s), the data block has been received correctly. If, on the other hand, the peripheral responds with the control character NAK, any other character or the acknowledgement delay time elapses without a reaction, the control system starts again from the beginning by setting up a connection with STX. After a total of six unsuccessful attempts (3964R protocol specification) to send the data block, the process is aborted and the control system sends the control character NAK to the peripheral. 8.3.1.4 The control system receives [1] If the control system receives the control character STX from the peripheral when the control system is idle, it responds with DLE. If the control system receives another character (except STX) when it is idle, it waits until the character delay time (CDT, typically: 100 ms) has elapsed and then sends the control character NAK. After each character, the next character is awaited during the character delay time (CDT). If the character delay time elapses without the reception of a character, the control character NAK is sent to the peripheral.

094485-04-11/13 Subject to technical modifications Page 39/44 When the control system detects the character string DLE ETX BCC, it ends reception. The control system compares the block check character BCC with the longitudinal parity calculated internally. If the block check character is correct and no other reception errors have occurred, the control system sends the control character DLE. If the BCC is erroneous, the control character NAK is sent to the peripheral. A retry is then expected. If it is not possible to receive the block correctly after a total of six attempts (3964R protocol specification) or the retry is not started by the peripheral within the block waiting time of 4 s, the control system interrupts the reception. If transfer errors occur during reception (lost characters, frame errors, parity errors), the control system continues to receive data until the connection is terminated and then sends the control character NAK to the peripheral. Then a retry in the form described above is awaited. 8.3.1.5 Summary of the most important points  DLE duplication: For the control system to be able to differentiate between the control character DLE and a randomly occurring 10hex value in the message core, a 10hex value in the message core must be sent twice. In this way it is achieved that the data is interpreted by the receiving end as user data and not as control characters for connection termination.  The block check character (BCC): At the end of each data block a check character is sent to assure data integrity. The block check character BCC is the even longitudinal parity (XOR operator on all data bytes) of a block sent or received. The block check character is formed starting with the first byte of the message core after connection is set up and ends after the characters DLE and ETX during connection termination.  Retries on errors: If an error occurs for any reason during the data transfer, a total of six attempts are made to transfer the data correctly. 8.4 Commands for writing and reading a read/write Electronic-Key Write and read processes are always initiated by the PC using a "command message". The Electronic-Key-System then sends a reply message to the PC. PC/control system Electronic-Key-System Command message → Reply message ← On read/write Electronic-Keys with 116 bytes, the memory is organized in 4-byte blocks. This means a multiple of 4-byte sized blocks must always be written. The start address must be given in the range byte number 0 to byte number 112, always in 4-byte steps (byte number 0, 4, 8 ... 112)! However, during reading it is possible to access the memory byte-by-byte without the above-mentioned restriction for writing.

Page 40/44 Subject to technical modifications 094485-04-11/13 8.4.1 Write process When this command is used, the Electronic-Key must be in the Electronic-Key adapter, and must be removed from within the operating distance only after the reply message has been received. Command message (message core, PC→ EKS, see Figure 2):  TP (device addr.) (start addr. user data) (number of bytes of user data) (user data) Reply message (message core, EKS → PC, see Figure 3):  RF (device addr.) (00hex, 00hex) (status number) Byte no. Description Contents ASCII hexadecimal decimal 0 Number of message bytes 0B ... 7B 11 ... 123 1 2 Command identification T P 54 50 84 80 3 Device address 01 1 4 5 Start address for the user data 00 00 ... 70 0 0 ... 112 6 Number of bytes of user data 04 ... 74 4 ... 116 7 ... 122 User data ASCII or hexadecimal or BCD (code transparent) Figure 2: Command message write to read/write Electronic-Key (message core) Byte no. Description Contents ASCII hexadecimal decimal 0 Number of message bytes 07 7 1 2 Command identification R F 52 46 82 70 3 Device address 01 1 4 5 Padding data 00 00 0 0 6 Status number * Figure 3: Reply message write to read/write Electronic-Key - status (message core) * Status number 00hex: No error 02hex: Electronic-Key not in the operating distance (For further status numbers see section 8.6)

094485-04-11/13 Subject to technical modifications Page 41/44 8.4.2 Read process Command message (message core, PC→ EKS, see Figure 4):  TL (device addr.) (start addr. user data) (number of bytes of user data) Reply message (message core, EKS → PC, see Figure 5 or Figure 6): For this command there are two possible replies:  RL (device addr.) (start addr. user data) (number of bytes of user data) (user data) or  RF (device addr.) (00hex,00hex) (status number) The reply message RL (see Figure 5) stands for correct reception of the data. If an Electronic-Key cannot be read, an RF reply message is received (see Figure 6). The status number then indicates the cause of the error. Byte no. Description Contents ASCII hexadecimal decimal 0 Number of message bytes 07 7 1 2 Command identification T L 54 4C 84 76 3 Device address 01 1 4 5 Start address for the user data 00 00 ... 73 0 0 ... 115 6 Number of bytes of user data 01 ... 74 1 ... 116 Figure 4: Command message read from read/write Electronic-Key (message core) Byte no. Description Contents ASCII hexadecimal decimal 0 Number of message bytes 08 ... 7B 8 ... 123 1 2 Command identification R L 52 4C 82 76 3 Device address 01 1 4 5 Start address for the user data 00 00 ... 73 0 0 ... 115 6 Number of bytes of user data 01 ... 74 1 ... 116 7 ... 122 User data ASCII or hexadecimal or BCD (code transparent) Figure 5: Reply message read from read/write Electronic-Key (message core) Byte no. Description Contents ASCII hexadecimal decimal 0 Number of message bytes 07 7 1 2 Command identification R F 52 46 82 70 3 Device address 01 1 4 5 Padding data 00 00 0 0 6 Status number * Figure 6: Reply message read from read/write Electronic-Key - status (message core) * Status number 02hex: Electronic-Key not in the operating distance (For further status numbers see section 8.6)

Page 42/44 Subject to technical modifications 094485-04-11/13 8.4.3 Reading the serial number The read/write Electronic-Key contains a unique 8-byte serial number. This number is written by laser during the Electronic-Key production process and can never be changed or deleted. The serial number is used for secure distinction of every single Electronic-Key. It is necessary that all 8 bytes are completely evaluated for this secure distinction. The serial number is appended to the freely programmable user data. The serial number can be read by entering the start address byte number 116 and the number of bytes 8 (see section 8.4.2). 8.5 Command overview Description Command message Reply message Program (write) Electronic-Key TP (see section 8.4.1) RF (see section 8.4.1) Read Electronic-Key (also read the serial number) TL (see sections 8.4.2 and 8.4.3) RL (see section 8.4.2) or RF (see section 8.4.2) 8.6 Status numbers Value Description 00hex No error 02hex Electronic-Key not in the operating distance 03hex Parity bit error on read-only Electronic-Key 06hex Write process interrupted. Start address or number of bytes is not a multiple of the block size 4 17hex Read attempt when the Electronic-Key adapter is set to read/write Electronic-Key and a read-only Electronic-Key is inserted 18hex Read attempt when the Electronic-Key adapter is set to read-only Electronic-Key and a read/write Electronic-Key is inserted 4xhex General Electronic-Key communication error (renewed write or read necessary) 50hex Write attempt despite enabled write protection

094485-04-11/13 Subject to technical modifications Page 43/44 9 Exclusion of liability Exclusion of liability under the following conditions:  incorrect use  non-compliance with safety regulations  if mounting and electrical connection are carried out by unauthorized personnel  if modifications are made 10 Service and repair  No servicing is required,  Remove dirt from the Electronic-Key and the Electronic-Key adapter using a soft cloth and solvent-free, non-abrasive cleaning agents.  Repairs must be performed only by the manufacturer.  On version EKS FSA devices, the safety-related functions must be checked at regular intervals. 11 Guarantee The "General Terms and Conditions" of EUCHNER GmbH + Co. KG apply. 12 Bibliography [1] SIEMENS AG manuals, connection components for S7 control systems Controller (PLC) S7-300CPU-Data CPUs 312C to 314C-2DP/PtP Only RS422/485 Point-to-point communication CP 340 SIEMENS order no. Installation and parameter assignment 6ES7340-1AH00-8AA0 Point-to-point communication CP 341 SIEMENS order no. Installation and parameter assignment 6ES7341-1AH00-8AA0 Point-to-point communication CP 441 SIEMENS order no. Installation and parameter assignment 6ES7441-2AA00-8AA0 [2] Detailed application examples from EUCHNER

registered trademarks of Microsoft Corporation EUCHNER GmbH + Co. KG Telephone +49 711 / 75 97 - 0 Kohlhammerstraße 16 Fax +49 711 / 75 33 16 D-70771 Leinfelden-Echterdingen www.euchner.de . [email protected]