Resetting Non-Fatal Errors - Omron NJ Series Troubleshooting Manual

1 Overview of Errors
 Current Errors
Open the Controller Error Tab Page on the NS-series PT's Troubleshooter to check the current
error's event name, event code, level, source, source details, time, details, and attached information
1 to 4. Observations are not displayed on this tab page.
 Log of Past Errors
Open the Controller Event Log Tab Page on the NS-series PT's Troubleshooter to check the time,
level, source, event name, event code, details, and attached information 1 to 4 for previous errors.
Refer to the NS-series Programmable Terminals Programming Manual (Cat. No. V073) for details on
the NS-series PT's Troubleshooter.
Instructions That Read Function Module Error Status
You can determine the error status with the instructions that get error status provided for each function
module from the user program. These instructions get the status and the event code of the error with
the highest level.
Applicable function module
PLC Function Module
Motion Control Function Module
EtherCAT Master Function Mod-
ule
EtherNet/IP Function Module
For details on the instructions that get error status, refer to the NJ-series Instructions Reference Manual
(Cat. No. W502).
Checking with System-defined Variables
You can check the Error Status variable in the system-defined variables to determine the status of
errors in a Controller. You can read the Error Status variable from an external device by using communi-
cations. Refer to the NJ-series CPU Unit Software User's Manual (Cat. No. W501) for information on
system-defined variables.
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 Module.
1-14
Instruction name
Get PLC Controller Error Status
Get I/O Bus Error Status
Get Motion Control Error Status
Get EtherCAT Error Status
Get EtherNet/IP Error Status
Instruction
GetPLCError
GetCJBError
GetMCError
GetECError
GetEIPError
NJ-series Troubleshooting Manual (W503)