Error Judgment Processing - Omron V330-F Series Connection Manual

9.3. Error Judgment Processing

This section describes error judgment processing by the software part.
9.3.1. Error Judgment by the Software Part
This software part performs error judgment processing for the following four types of errors (1)
to (4). Refer to 9.7. Error Code List for information on error codes.
① Communications error during TCP socket communications by manipulating dedicated
control bits
An error that occurred in TCP socket communications, such as main unit error, command
format error, or parameter error, is judged as a "communications error". The judgment is made
based on the response codes in the allocated DM Area for TCP socket communications by
manipulating dedicated control bits.
② Timeout error during communications with the code reader
An error that occurred due to abnormal open, send, receive, or close processing that failed to
complete within the monitoring time is judged as a timeout error. This judgment is made based
on timer monitoring in the software part. Refer to 9.3.2. Time Monitoring Function for
information on time monitoring using the internal timers of the software part.
③ Code reader error
An error such as a command error, parameter error, or inexecutable error on the code scanner
is judged as a "code reader error". The judgment is made based on the response data
returned from the code reader.
* This error judgment is not supported by V430 Series because it does not return a response
in the event of an error.
④ TCP connection status error at end of processing
The software part uses a procedure in which the overall processing ends after the last close
processing is done, regardless of whether the open to receive processing steps have ended
normally or abnormally. Therefore, judgment of whether close processing has ended normally
is made according to the TCP Connection Status words in the allocated DM Area. If there is
an error in close processing, the next open processing may not be performed correctly. Refer
to 9.3.3. TCP Connection Status Error Situation and Correction for information on how to
correct a TCP connection status error.
CJ2M-CPU12 with
CJ1W-ETN21
Ethernet cable
(1) (2) (4)
9. Software Part
Code reader
(3)
45