Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Manual de usuario descargar pdf (Pagina 78)

11 Supplement

VEGAFLEX 83 • Modbus and Levelmaster protocol

41838-EN-130314

Parameter Length Code/Data

Number of Registers 2 Bytes 1 to 127 (0x7D)

Response:

Parameter Length Code/Data

Function Code 1 Byte 0x03

Start Address 2 Bytes 2*N

FC4 Read Input Register

With this command, any number (1-127) of input registers can be read out. The start register, from

which the readout should start, and the number of registers are transmitted.

Request:

Parameter Length Code/Data

Function Code 1 Byte 0x04

Start Address 2 Bytes 0x0000 to 0xFFFF

Number of Registers N*2 Bytes 1 to 127 (0x7D)

Response:

Parameter Length Code/Data

Function Code 1 Byte 0x04

Start Address 2 Bytes 2*N

FC6 Write Single Register

With this function code an individual holding register can be written.

Request:

Parameter Length Code/Data

Function Code 1 Byte 0x06

Start Address 2 Bytes 0x0000 to 0xFFFF

Number of Registers 2 Bytes Data

Response:

Parameter Length Code/Data

Function Code 1 Byte 0x04

Start Address 2 Bytes 2*N

FC8 Diagnostics

With this function code dierent diagnostic functions can be triggered or diagnostic values read out.

1 2 ... 73 74 75 76 77 78 79 80 81 82 83 ... 95 96

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Vega VEGAFLEX 83 Modbus and Levelmaster protocol PFA in Manual de usuario Pagina 78