Omron CJ1W-CRM21, Operation Manual

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Troubleshooting the Network Section 8-3
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IO Controller Status 1 The IO Controller Status 1word displays the state of the Unit. It shows if the IO
Controller can go on the network and communicate with the current
configuration with the IO devices.
/i
Local Configuration Storage Error After the download of a new configuration
or a restore from the Compact Flash card
in the PLC CPU the IO Controller will store
the configuration in its memory. If it does
not succeed then this flag is ON.
Try to download the configuration again. If
the problem persists the replace the IO
Controller.
Local Configuration Load Error During startup of the IO Controller loads
the configuration from memory. If it does
not succeed then this flag is ON.
Try to download the configuration again. If
the problem persists the replace the IO
Controller.
File Read Error If the IO Controller restores a configuration
from Compact Flash card in the PLC CPU
and it can not access the configuration file
on the Compact Flash card then this flag is
ON.
Error Log Storage Error If a new error needs to be written to the
Error Log and the IO Controller does not
succeed in storing this error in the Error
Log then this flag is ON.
LED Indicators Description/Correction
LED Indicators Description/Correction
Controller is ONLINE Normally the IO Controller is always
Online. If the IO Controller has gone
Offline then a severe error has occurred.
Check the Unit Status and the Error
History to see the cause.
Eventually replace the Unit.
Controller is in Data Exchange The IO Controller is in Data Exchange
when it can reach at least one of the
configured IO devices. This shows that the
network connection to the IO Devices
works. If some of the IO Devices can not
be reached it is a network issue and not an
issue of the IO controller.
If the IO Controller is out of Data
Exchange it means that their is something
wrong with the network connection from
the IO Controller to the IO Devices.