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Modbus RTU

Reading a Modbus RTU Power Meter from a PLC: Function Codes and Register Maps

Get a Modbus RTU power meter into an S7-1200 or Micro800: function codes 03 and 04, the 30001 offset, floats across two registers, word order, STATUS 80C8.

Categories PLC & HMI, Siemens TIA Portal Tags Array, counter, Modbus RTU, S7-1200

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