Omron FQ2-S4 User Manual page 412

<Response Format>
If a parameter is attached, the parameter and delimiter are output when the command is processed normally,
and the command execution result is OK. A delimiter is inserted at the end of the response.
The delimiter is always CR.
Command Execution Result
Parameter
1 0 CR
Delimiter
O K CR
Delimiter
If the command is not processed normally, the command execution result is NG.
Command Execution Result
N G CR
Delimiter
An error occurs in the following cases.
• A non-existent command was specified.
• The number of parameters is incorrect.
• The parameter range is incorrect.
• The parameter content is incorrect.
• Operation could not be performed normally for the operation command.
410
Controlling Operation and Outputting Data with TCP No-protocol Communications FQ2-S4 User's Manual