176
Example:
setting Relay2 on.
Query
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Byte7~32
FAH
05H
00H
01H
FFH
00H
00H
Response
Byte1
Byte2
Byte3
Byte4
Byte5
Byte6
Byte7~32
FAH
05H
00H
01H
FFH
00H
00H
5.3.14 Format of function code 02H
Function code 02H is used to read DI status in MODBUS-RTU. In PROFIBUS-DP,
the format of function code 02H is defined as follows:
Query
Frame Bytes
Caption
Byte1
Channels can be chosen from 1 to 8
Byte2
02H
Byte3
starting address high byte
Byte4
starting address low byte
Byte5
quantity of digital inputs high byte
Byte6
quantity of digital inputs low byte
Byte7~32
0
Response
Frame Bytes
Caption
Byte1
The channel of inquiry frame
Byte2
02H
Byte3
byte count
Byte4
inputs status1
Byte5
inputs status2 (or 0)
Byte6
inputs status3 (or 0)
Byte7
inputs status4 (or 0)
Byte8~32
0
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Summary of Contents for Acuvim II
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