Vega VEGAPULS 63 Operating Instructions Manual page 84

11 Supplement
Request:
Parameter
Function Code
Start Address
Number of Registers
Response:
Parameter
Function Code
Start Address
Register Value
FC8 Diagnostics
With this function code different diagnostic functions can be triggered or diagnostic values read out.
Request:
Parameter
Function Code
Sub Function Code
Data
Response:
Parameter
Function Code
Sub Function Code
Data
Implemented function codes:
Sub Function Code
0x00
0x0B
With sub function codes 0x00 only one 16 bit value can be written.
FC16 Write Multiple Register
With this function code, several holding registers can be writen. Only registers can be written in an
enquiry which are immediately consecutive. If there are gaps (registers do not exist) between the
registers, then they cannot be written in a telegram.
84
Length
1 Byte
2 Bytes
2 Bytes
Length
1 Byte
2 Bytes
2 Bytes
Length
1 Byte
2 Bytes
N*2 Bytes
Length
1 Byte
2 Bytes
N*2 Bytes
Name
Return Data Request
Return Message Counter
VEGAPULS 63 • Modbus and Levelmaster protocol
Code/Data
0x06
0x0000 to 0xFFFF
Data
Code/Data
0x04
2*N
Data
Code/Data
0x08
Data
Code/Data
0x08
Data