Error Notification And Check Methods; Error Notification Methods - Omron CJ1W-ECT21 Operation Manual

5 Troubleshooting
5-1 Error Notification and Check Meth-
ods
This section describes error notification, checking methods and procedures when an error has occurred
in the EtherCAT Slave Unit.
5-1-1

Error Notification Methods

The EtherCAT Slave Unit uses the following methods to notify the NJ-series CPU Unit or EtherCAT
master that errors have occurred.
Notification to the master:
•
Emergency message
•
AL status
NJ-series
CPU Unit
Type of error notification
Emergency message
AL status
5 - 2
EtherCAT master
Notification to the NJ-series CPU Unit:
•
Unit status
•
Slave status
•
Event log
Overview
The emergency message reports appli-
cation level errors. The error code con-
tains the CiA-defined error code, and an
additional error code in the unique
header area.
This status reports errors related to
EtherCAT communications. The
ETG-defined method is used for the
error detection and error code.
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)
Indicators
CJ-series
EtherCAT Slave Unit
CJ1W-ECT21
When an error occurs, the EtherCAT
Slave Unit notifies the EtherCAT master.
When an error occurs, the error is writ-
ten to the AL status register to notify the
EtherCAT master.
Notification method