SMA Modbus EDMM-US-10 Technical Information

ENGLISH Technical Information SMA Modbus® Interface SMA DATA MANAGER M ...

Technical Information EDMM-10-Modbus-TI-en-11 2 Legal Provisions The information contained in these documents is property of SMA Solar Technology AG. Any publication, whether in whole or in part, requires prior written approval by SMA Solar Technology AG. Internal reproduction used solely for the purpose of product evaluation or other proper use is allowed and does not require prior approval. SMA reserves the right to modify the implementation of communication interfaces and protocols at any time without notifying the user. It is the user’s responsibility to determine whether the downloaded content is up to da ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 3 Table of Contents 1 Information on this Document................................................. 4 1.1 Validity........................................................................................................................ 4 1.2 Target Group.............................................................................................................. 4 1.3 Content and Structure of this Document ................................................................... 4 1.4 Levels of warning messages............................................................... ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 4 1 Information on this Document 1.1 Validity This document is valid for: • EDMM-10 (SMA Data Manager M) • EDMM-US-10 (SMA Data Manager M) 1.2 Target Group The tasks described in this document must only be performed by qualified persons. Qualified persons must have the following skills: • Detailed knowledge of the grid management services • Knowledge of IP-based network protocols • Knowledge of the Modbus specifications • Training in the installation and configuration of IT systems • Knowledge of and compliance with this document and a ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 5 1.5 Symbols in the Document Symbol Explanation Information that is important for a specific topic or goal, but is not safety-relevant ☐ Indicates a requirement for meeting a specific goal ☑ Desired result ✖ A problem that might occur 1.6 Typographies in the document Typography Use Example bold • Messages • Terminals • Elements on a user interface • Elements to be selected • Elements to be entered • Connect the insulated conductors to the terminals X703:1 to X703:6. • Enter 10 in the field Minutes. > • Connects several elements t ...

Technical Information EDMM-10-Modbus-TI-en-11 6 2 Safety 2.1 Intended Use The Modbus interface of the supported SMA products is designed for industrial use and has the following tasks: • Remote control of the grid management services of a PV system • Remote-controlled querying of the measured values of a PV system • Remote-controlled changing of the parameters of a PV system • Interface for direct marketing The Modbus interface can be used via the protocol Modbus TCP. All components must remain within their permitted operating ranges and their installation requirements at all times. Use this product only in acc ...

Technical Information EDMM-10-Modbus-TI-en-11 7 NOTICE Manipulation of PV system data in Ethernet networks You can connect the supported SMA products to the Internet. When connected to the Internet, there is a risk that unauthorized users can access and manipulate the data of your PV system. • Set up a firewall. • Close unnecessary network ports. • If absolutely necessary, only enable remote access via a virtual private network (VPN). • Do not set up port forwarding at the used Modbus ports. Access to data points after activating the Modbus interface The reading and writing access to data points is possible aft ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 8 3 Product Overview 3.1 Modbus Protocol The Modbus Application Protocol is an industrial communication protocol that is currently used in the solar sector mainly for PV system communication. The Modbus protocol has been developed for reading data from or writing data to clearly defined data areas. The Modbus specification does not prescribe what data is within which data area. The data areas must be defined device-specifically in Modbus profiles. With knowledge of the device-specific Modbus profile, a Modbus client (e.g. a SCADA system) can access the data of a M ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 9 3.4.3 Data Transmission In accordance with the Modbus specification, only a specific volume of data can be transported in a single data transmission in a simple protocol data unit (PDU). The data also contains function- dependent parameters such as the function code, start address or number of Modbus registers to be transmitted. The amount of data depends on the Modbus command used and has to be taken into account during data transmission (see Section 3.4.4, page 9). With data storage in the Motorola format "Big Endian", data transmission begins with the high ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 10 Reading multiple Modbus registers as a data block If a data block is read and if at least one register defined in the Modbus profile can be determined in its data range, an answer is returned. If this data block also contains Modbus registers that are not defined in the Modbus profile, NaN is used for the query values in each case. If none of the Modbus registers are defined in the data range of a data block in the Modbus profile, the query is invalid and a Modbus exception is generated. Error message on writing multiple Modbus registers as a data block If mult ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 11 Format Explanation ENUM or TAGLIST Coded numerical values. The breakdown of the possible codes can be found directly under the designation of the Modbus register in the assignment tables. FIX0 Decimal number, commercially rounded, without decimal place. FIX1 Decimal number, commercially rounded, one decimal place. FIX2 Decimal number, commercially rounded, two decimal places. FIX3 Decimal number, commercially rounded, three decimal places. FIX4 Decimal number, commercially rounded, four decimal places. FUNCTION_SEC The date saved in the Modbus register will be ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 12 Release type Release-type coding Explanation 4 R Release 5 S Special release > 5 As number No special interpretation Example: Product firmware version: 1.05.10.R Values from double word (DWORD): Major: 1, Minor: 05, Build: 10, Release type: 4 (Hex: 0x1 0x5 0xA 0x4) 3.5 Modbus Ports The following table shows the default setting of the supported network protocols: Network protocol Modbus port TCP 502 Using free ports Only use free ports when using another port than 502. The following range is generally available: 49152 to 65535. You can find more information on o ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 13 Signal runtime via the SMA product with Modbus interface The signal runtime of the SMA product with Modbus is usually 100 ms. The signal runtime is the time required by the SMA product to process incoming Modbus commands. Data Transfer Interval via the Modbus protocol For system stability reasons, the time period between data transfers via the Modbus protocol must be at least ten seconds. No more than five parameters and measured values should be transmitted per SMA inverter. Data Transfer Interval via the Modbus protocol The physical reaction time of SMA prod ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 14 Code Explanation Code Explanation 308 On 1391 Active power limitation P via digital in- puts 309 Operation 1392 Errors 311 Open 1393 Wait for PV voltage 336 Contact the manufacturer 1394 Wait for valid AC grid 337 Contact the installer 1395 DC area 338 Invalid 1396 AC grid 381 Stop 1455 Emergency stop 455 Warning 1466 Waiting 461 SMA (manufacturer specification) 1467 Starting 1041 leading 1468 MPP search 1042 lagging 1469 Shutdown 1069 Reactive power / voltage characteris- tic curve Q(V) 1470 Disturbance 1070 Reactive power Q, direct setpoint 1471 Warning/error ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 15 4 Assignment Tables 4.1 Information on Assignment Tables The following subsections are sorted by unit ID. Each contains a table of the Modbus registers which can be accessed using this unit ID. The tables present the following information: Information Explanation ADR Decimal Modbus register Description/number codes Short description of the Modbus register and the number codes used CNT Number of assigned Modbus registers Type Data type Format Data format of the saved value Access Access type 4.2 Unit ID = 1 (Communication Product) The following table lists the ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 16 ADR Description/number codes CNT Type Format Access 30513 Total energy fed in on all line conductors (in Wh) 4 U64 FIX0 RO 30775 Current active power on all line conductors (W) 2 S32 FIX0 RO 30805 Reactive power on all line conductors (VAr) 2 S32 FIX0 RO 31235 Power limitation via digital input (in %) 2 U32 FIX2 RO 31239 PV power limitation via communication (in %) 2 U32 FIX2 RO 31241 PV power limitation via communication for direct marketing (in %) 2 U32 FIX2 RO 31243 Minimum PV power limitation (in %) 2 U32 FIX2 RO 31249 Active power of system at PCC (in W) ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 17 ADR Description/number codes CNT Type Format Access 34653 Digital input group 1, coded as status: • 311 = Open • 2055 = DI1 • 2056 = DI1 DI2 • 2057 = DI1 DI2 DI3 • 2058 = DI1 DI2 DI3 DI4 • 2059 = DI1 DI2 DI4 • 2060 = DI1 DI3 • 2061 = DI1 DI3 DI4 • 2062 = DI1 DI4 • 2063 = DI2 • 2064 = DI2 DI3 • 2065 = DI2 DI3 DI4 • 2066 = DI2 DI4 • 2067 = DI3 • 2068 = DI3 DI4 • 2069 = DI4 2 U32 ENUM RO 40015 Reactive power setpoint Q, in % of the maximum active power (PMAX) of the PV plant. Value range: • -100% to -1% = load • 0% = no reacti ...

SMA Solar Technology AG Technical Information EDMM-10-Modbus-TI-en-11 18 ADR Description/number codes CNT Type Format Access 40022 Reactive power setpoint Q, in % of the maximum active power (PMAX) of the PV plant. Value range: • -100% to -1% = load • 0% = no reactive power • < 0% to 100% = generator 1 S16 FIX2 WO 40023 Active power setpoint P, in % of the maxi- mum active power (PMAX) of the PV plant. Value range: • -100% to -1% = load • 0% = no active power • < 0% to 100% = generator 1 S16 FIX2 WO 40492 Direct marketer: Reactive power setpoint Q, in % of the maximum active power (PMAX) of the PV plant. Value range: ...

Technical Information EDMM-10-Modbus-TI-en-11 19 5 Contact Deutschland Österreich Schweiz SMA Solar Technology AG Niestetal Sunny Boy, Sunny Mini Central, Sunny Tripower: +49 561 9522‑1499 Monitoring Systems (Kommunikationsprodukte): +49 561 9522‑2499 Fuel Save Controller (PV-Diesel-Hybridsysteme): +49 561 9522-3199 Sunny Island, Sunny Boy Stor- age, Sunny Backup: +49 561 9522-399 Sunny Central, Sunny Central Storage: +49 561 9522-299 SMA Online Service Center: www.SMA-Service.com Belgien Belgique België Luxemburg Luxembourg Nederland SMA Benelux BVBA/SPRL Mechelen +32 15 286 730 SMA Online Service ...

Technical Information EDMM-10-Modbus-TI-en-11 20 United Arab Emirates SMA Middle East LLC Abu Dhabi +971 2234 6177 SMA Online Service Center: www.SMA-Service.com India SMA Solar India Pvt. Ltd. Mumbai +91 22 61713888 ไทย SMA Solar (Thailand) Co., Ltd. กรุงเทพฯ +66 2 670 6999 대한민국 SMA Technology Korea Co., Ltd. 서울 +82-2-520-2666 South Africa SMA Solar Technology South Africa Pty Ltd. Cape Town 08600SUNNY (08600 78669) International: +27 (0)21 826 0699 SMA Online Service Center: www.SMA-Service.com Argentina Brasil Chile Perú SMA South America SPA Santiago de Chile +562 2820 2101 ...