Advantech ADAM-5000/TCP Series - Page 101

Chapter 6
Planning Your Application Program
Example: Read coil number 1 to 8 (address number 10001 to 10008) from
ADAM-5000/TCP
01 01 00 01 00 08
Response message format for function code 01:
Command Body
Station
Address
Function
Code
Byte
Count
Data Data …
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-5000/TCP in a binary data format. Request message format
for function code 02:
Command Body
Station Function
Start Start Requested Requested
Address Code
Address Address Number of Input Number of Input
High Byte Low Byte High Byte Low Byte
Example: Read coil number 1 to 8 (address number 10001 to 10008) from
ADAM-5000/TCP
01 01 00 01 00 08
Response message format for function code 02:
Command Body
Station
Address
Function
Code
Byte
Count
Data Data …
Example: input number 2 and 3 are on, all others are off.
01 01 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.
6-34 ADAM-5000/TCP User’s Manual