B&B Electronics ADAM-6066 - Manual - Manual (Page 129)

119 Chapter 6
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 inputs 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