Denkovi smartDEN IP-16R-MT, Руководство пользователя

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smartDEN IP-16R-MT User Manual
7 July 2020
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Function Code 1 Byte 0x0F
Start Address 2 Bytes 0x0000
Quantity of Outputs 2 Bytes 0x0010
Error
The possible error responses for function code 0x0F are:
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Function Code (1 byte): 0x8F (0x80 + 0x0F)

Exception Codes (1 byte):
- 0x01
– Function code not supported
- 0x02
– Incorrect combination of start address and coil quantity
Error response example:
Table 18. Write Multiple Coils 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 0x8F
Exception Codes 1 Byte 0x01 or 0x02
9.1.4. Read Holding Registers
This command is used to read the contents of a contiguous block of registers.
Request
The Read Holding Registers request specifies the starting register address and
the number of registers to be read.
Note : If the sum of the start address and number of registers exceeds the size of
the accessed block of registers, an error response will be returned.
Request example: Read Week Schedule Start Date fields:
Table 19. Read Holding Registers request
Field Length Data
Transaction Identifier 2 Bytes 0x0004
Protocol Identifier 2 Bytes 0x0000
Length 2 Bytes 0x0006
Unit Identifier 1 Byte 0x00
Function Code 1 Byte 0x03
Starting Register Address 2 Bytes 0x6100
Quantity of Registers 2 Bytes 0x0003
Response
The Read Holding Registers response returns the function code, byte count, and
register‟s values packed as two bytes per register.