Resetting Non-Fatal Errors - Omron NX701-17 Series Troubleshooting Manual

1 Overview of Errors
1-3-3

Resetting Non-fatal Errors

Unless you reset an error, the CPU Unit will retain the error status until you turn OFF the power supply
to the Controller or reset the Controller.
To reset a Controller error, it is necessary to eliminate the cause of the error. The same error will occur
again if you reset the error, but do not eliminate the cause of the error.
Precautions for Safe Use
Always confirm safety at the connected equipment before you reset Controller errors with an
event level of partial fault or higher for the EtherCAT Master Function Module. When the error is
reset, all slaves that were in any state other than Operational state (in which outputs are dis-
abled) due to the Controller error with an event level of partial fault or higher will go to Opera-
tional state and the outputs will be enabled. Before you reset all errors, confirm that no Controller
errors with an event level of partial fault have occurred for the EtherCAT Master Function Mod-
ule.
Always confirm safety at the connected equipment before you reset Controller errors for a CJ-
series Special Unit. When the Controller error is reset, the Unit where the Controller error with an
event level of observation or higher will be restarted. Before you reset all errors, confirm that no
Controller errors with an event level of observation or higher have occurred for the CJ-series
Special Unit. Observation level events do not appear on the Controller Error Tab Page, so it is
possible that you may restart the CJ-series Special Unit without intending to do so. You can
check the status of the _CJB_UnitErrSta[0,0] to _CJB_UnitErrSta[3,9] Error Status variables on
a Watch Tab Page to see if an observation level Controller error has occurred.
Precautions for Correct Use Precautions for Correct Use
Resetting an error is not the same as eliminating the cause of the error. Always eliminate the
cause of an error before you perform the procedure to reset the error.
1-22 NJ/NX-series Troubleshooting Manual (W503)