Omron CJ Series Connection Manual page 71

No. Function
4.4. Normal/error determination
processing
4.5. Error code storage area
setting
Description
Determines whether the send processing ends normally, ends
in error or times out.
In the case of normal end, the program shifts to the receive
processing. In the case of error end, it shifts to the logout
processing.
When it is determined in 4.4. Normal/Error Determination
Processing that the processing ends normally, #0 is set in the
error code storage area.
When it is determined in 4.4. Normal/Error Determination
Processing that the processing ends in error, the following
values are set.
•Response code for a response code error
•#F201 for a timeout
*For information on response codes, refer to 9.7. Error Code
List.
9．Program
68