B&B Electronics ADAM-6066 - Manual - Manual (Page 235)

225 Appendix B
Response message format for function code 01:
Example: Coils number 2 and 7 are on, all others are off.
01 01 01 42
In the response the status of coils 1 to 8 is shown as the byte value
42 hex, equal to 0100 0010 binary.
Function Code 02
The function code 02 is used to read the discrete input’s ON/OFF status
of ADAM-6000 in a binary data format.
Request message format for function code 02:
Example: Read coil number 1 to 8 (address number 00001 to 00008) from
ADAM-6000 modules
01 02 00 01 00 08
Response message format for function code 02:
Example: input number 2 and 3 are on, all others are off.
01 02 01 60
In the response the status of input 1 to 8 is shown as the byte value
60 hex, equal to 0110 0000 binary.
Command Body
Station
Address
Function
Code
Byte
Count
Data Data …
Command Body
Station
Address
Function
Code
Start Address
High Byte
Start Address
Low Byte
Requested Number
of Input High Byte
Requested Number
of Input Low Byte
Command Body
Station
Address
Function
Code
Byte
Count
Data Data …