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Response
Error
Error code 1 Byte 0x86
Exception code 1 Byte 01 or 02 or 03 or 04
For configuration parameters exception code 03 indicate that the data send is out of the boundary
limit.
Write Parameter
(Multiple Register)
:
Function Code 0x10 (Write Holding Registers)
Request
Here is an example of a request to write two registers starting at 2 to 00 0A and 01 02 hex:
Read Single Bit Parameter (Coil):
Function Code 0x01
Request
Function code 1 Byte
0x01
Starting Address 2 Bytes 0x0000 to 0xFFFF
Quantity of Coils 2 Bytes
1 to 2000 (0x7D0)
Response
Function code 1 Byte 0x01
Byte count 1 Byte 2 x N *
Coil Status
n Byte n = N or N+1
* N = Quantity of Outputs / 8, if the remainder is different of 0 => N = N+1
Error
Error code 1 Byte Function code + 0x80
Exception code 1 Byte 01 or 02 or 03 or 04
Function code 1 Byte 0x06
Starting Address 2 Bytes 0x0000 to 0xFFFF
Register Value (Data) 2 Bytes 0x0000 to 0xFFFF
Function code 1 Byte
0x10
Starting Address 2 Bytes 0x0000 to 0xFFFF
Quantity of Registers 2 Bytes 0x0001 to 0x007B
Byte Count 1 Byte 2 x N*
Registers Value
N* x 2 Bytes
Data
* N = Quantity of Registers
Response
Function code 1 Byte 0x10
Starting Address 2 Bytes 0x0000 to 0xFFFF
Quantity of Registers 2 Bytes 1 to 123 (0x7B)
Error
Error code 1 Byte 0x90
Exception code 1 Byte 01 or 02 or 03 or 04