Diagnosis Data, Device Information; Function Codes - Siemens SITRANS L Operating Instructions Manual

Technical data and dimensions
12.7 Diagnosis data, device information
12.7

Diagnosis data, device information

Register
Number
2300
2307
2308
12.8

Function codes

The function codes (FCs) are automatically used by the Modbus master to carry out
certain actions such as reading or writing.
With this command, any number (1-127) of holding registers is read out. The start
register, from which the readout should start, and the number of registers are
transmitted.
Request:
Response:
With this command, any number (1-127) of input registers is read out. The start
register, from which the readout should start as well as the number of registers are
transmitted.
Request:
Response:
This function code is used to write to a single Holding Register.
Request:
Response:
48
Register Name Type
Current uint32
diagnostic code
ro
Device status uint8
ro
Device serial string
number (12
characters)
Parameter
Function Code
Start Address
Number of Registers
Function Code
Byte count
Register Value
Parameter
Function Code
Start Address
Number of Registers
Function Code
Byte count
Register Value
Parameter
Function Code
Start Address
Number of Registers
Function Code
Note
According to NAMUR NE 107 recommendation
Current event category: 0 = ok, 1 = failure, 2 = check,
4 = maintenance, 8 = out of spec
-
Length Code/Data
1 Byte 0x03
2 Bytes 0x0000 to 0xFFFF
2 Bytes 1 to 127 (0x7D)
1 Byte 0x03
1 Byte 2*N
N*2 Bytes Data
Length Code/Data
1 Byte 0x04
2 Bytes 0x0000 to 0xFFFF
N*2 Bytes 1 to 127 (0x7D)
1 Byte 0x04
1 Byte 2*N
N*2 Bytes Data
Length Code/Data
1 Byte 0x06
2 Bytes 0x0000 to 0xFFFF
2 Bytes Data
1 Byte 0x04
Operating Instructions, 12/2020, A5E49829013
SITRANS LR110