Denkovi smartDEN IP-16R Series, User Manual

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smartDEN IP-16R-XX User Manual
13 Apr 2021
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Response
The normal response returns the function code, starting register address, and
quantity of registers written.
Response example: Set Week Schedule Start Date to 10/09/2020:
Table 10.28. Write Multiple Registers reply
Field Length Data
Transaction Identifier 2 Bytes 0x0006
Protocol Identifier 2 Bytes 0x0000
Length 2 Bytes 0x0006
Unit Identifier 1 Byte 0x00
Function Code
1 Byte 0x10
Starting Register Address 2 Bytes 0x6100
Quantity of Registers 2 Bytes 0x0003
Error
The possible error responses for function code 0x0F are:

Function Code (1 byte): 0x90 (0x80 + 0x10)

Exception Codes (1 byte):
- 0x01
– Function code not supported
- 0x02
– Invalid register address
- 0x03
– Invalid register value
Error response example:
Table 10.29. Write Multiple Registers error response
Field Length Data
Transaction Identifier
2 Bytes 0x0003
Protocol Identifier 2 Bytes 0x0000
Length 2 Bytes 0x0003
Unit Identifier
1 Byte 0x00
Function Code 1 Byte 0x90
Exception Codes 1 Byte 0x01 or 0x02 or 0x03