Vega VEGABAR 86 Operating Instructions Manual page 65

FC8 Diagnostics
With this function code different diagnostic functions can be triggered or diagnostic values read out.
Parameter
Request: Function Code
Sub Function Code
Data
Response: 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.
Parameter
Request: Function Code
Start Address
Register Value
Byte Number
Register Value
Response: Function Code
Sub Function Code
Data
FC17 Report Slave ID
With this function code, the Slave ID can be queried.
Request:
Parameter
Request: Function Code
VEGABAR 86 • Modbus and Levelmaster protocol
Length Code/Data
1 Byte 0x08
2 Bytes
N*2 Bytes Data
1 Byte 0x08
2 Bytes
N*2 Bytes Data
Name
Return Data Request
Return Message Counter
Length Code/Data
1 Byte 0x10
2 Bytes 0x0000 to 0xFFFF
2 Bytes 0x0001 to 0x007B
1 Byte 2*N
N*2 Bytes Data
1 Byte 0x10
2 Bytes 0x0000 to 0xFFFF
2 Bytes 0x01 to 0x7B
Length Code/Data
1 Byte 0x11
10 Supplement
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