Response Acquisition

This section describes the response acquisition procedure. A command response is one of two types: Normal response and Error response.

• Normal response
  This indicates that the proper command was requested and execution was also completed normally. For settings commands and control commands, command number and normal response codes are returned in the response data outputs. For acquisition commands, acquired data is returned in the response data outputs.
• Error response
  This indicates that the requested command or the execution result was not correct. For response data outputs, command number and response codes (error codes) are returned.

The external equipment acquires whether the requested command is either one of the above response by the command result output (ExtCmdResult).

Be sure to check this output when acquiring the response data signal.

• Low
  The result is normal. Execute the acquisition process for the requested command.
• High
  The result is abnormal. Check the abnormality from the response codes and deal with the error as necessary.

Set the response acquisition input (ExtRespGet) after the acquisition of the response result and the response data is completed. If the response acquisition input is set before the acquisition completion, the Controller may rewrite the information.