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Download SMA Cluster Controller MODBUS® Interface
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SMA Solar Technology AG Information on this Document Abbreviations Abbreviation Designation Explanation ADR (DEC) MODBUS start address as decimal value CNT (2 bytes) Number of assigned MODBUS registers. One register contains 2 bytes. Cluster Controller SMA Cluster Controller DT, FW, RAW, FIXn SMA data types; see Section SMA Data Types, page 25 DWORD Data with a width of 32 bit, according to IEC 61131-3 Hex Hexadecimal number MBAP Modbus Application Protocol Protocol for the Modbus from "Modbus Organization, Inc." MPP Maximum Power Point Maximum power point NaN Not a Number No useable value is returned PV plant PV plant RO Read Only Value can only be read RW Read/Write Value can be read and written SCADA Supervisory Control and Data Acquisition Concept for monitoring and controlling technical processes SMA Fieldbus Hardware interface for communication between SMA devices (e.g. Speedwire). For information on the various communication interfaces, please pay attention to the respective datasheets of the SMA devices used SUSy ID SMA Update System ID 3-digit numeric value that identifies a specific SMA device type WMAX Set active power limitation The device can generate active power up to this limit WORD Data with a width of 16 bit, according to IEC 61131-3 Technical Description ClusterController_MODBUS-TD-EN124811 7
