Denkovi smartDEN IP-16R Series, Руководство пользователя

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smartDEN IP-16R-XX User Manual
13 Apr 2021
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Table 10.15. Write Single Coil error response
Field Length Data
Transaction Identifier 2 Bytes 0x0002
Protocol Identifier
2 Bytes 0x0000
Length 2 Bytes 0x0003
Unit Identifier 1 Byte 0x00
Function Code 1 Byte 0x85
Exception Codes
1 Byte 0x01 or 0x02 or 0x03
10.2.1.2. Write Multiple Coils
This command will force each coil in a sequence of coils to either ON or OFF.
Request
The Write Multiple Coils request specifies the starting address and quantity of
relays to be forced:

Start Address: 0x0000 (Relay 1) to 0x000F (Relay 16)

Coil Quantity: 0x0001 (1 Relay) to 0x0010 (16 Relays)
Note : If the sum of the start address and coil quantity exceeds 16, an error
response will be returned.
The requested ON/OFF states are specified by contents of the request data field.
A logical '1' in a bit position of the field requests the corresponding output to be ON.
A logical '0' requests it to be OFF.
Request example 1: Set relays 1 and 3 to ON, and relay 2 to OFF:
Table 10.16. Write Multiple Coils request example 1
Field Length Data
Transaction Identifier 2 Bytes 0x0003
Protocol Identifier
2 Bytes 0x0000
Length 2 Bytes 0x0008
Unit Identifier 1 Byte 0x00
Function Code
1 Byte 0x0F
Start Address 2 Bytes 0x0000
Quantity of Outputs 2 Bytes 0x0003
Byte Count 1 Byte 0x01
Outputs Value 1 Byte 0x05
Request example 2: Set relay 1 to OFF and relays 2..16 to ON:
Table 10.17. Write Multiple Coils request example 2
Field Length Data
Transaction Identifier 2 Bytes 0x0003
Protocol Identifier 2 Bytes 0x0000
Length 2 Bytes 0x0009
Unit Identifier 1 Byte 0x00
Function Code 1 Byte 0x0F
Start Address
2 Bytes 0x0000
Quantity of Outputs 2 Bytes 0x0010