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OMRON
APPENDIX C
Troubleshooting
The appendix is a guide to troubleshooting and resolving problems. Several tools and techniques are
discussed to assist troubleshooting, and in the case of no success, the information required to request
support.
How to diagnose problems
Here are some tips to help diagnose problems:
•
Where you think a problem exists try to create steps to reproduce it (see below)
•
Be scientific:
– Decide what the problem could be, and perform a test to prove or disprove the theory
– Perform one test at a time
•
Check the data values are correct in the PLC using the PLC Data Monitor, and are correct in CX-
Supervisor using the Point Maintenance tool
•
Prove that scripts are executed by popping up message boxes
•
For speed or responsiveness issues use the Performance Monitor to check the system is not
overloaded
Point Maintenance
The Point Maintenance dialog is very useful during troubleshooting for displaying, and setting point
values. Launch by right clicking the runtime and selecting Point Maintenance, providing that you
have sufficient security.
When an expected animation or script execution has not occurred, the Point Maintenance can quickly
show if the data is not the expected value. If the data is the correct value then the fault must lay with
the animation or script.
Note: You can not set the value of points defined as Input only. In this case use the PLC Data
Monitor.
PLC Data Monitor
The PLC Data Monitor is similar to the Point Maintenance dialog, except that it is a CX-Server tool
that operates at a lower level on the PLC. It can be used to read and write logical and physical
addresses, and using a variety of PLC data formats. It is launched by right clicking the runtime and
selecting Communication Utilities|PLC Data Monitor
Release 2.0
APPENDIX C – Troubleshooting
Page 297
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