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13 Troubleshooting
NX-series EtherCAT Coupler Unit User’s Manual (W519)
13-5 Error Notification Methods
13
13-5 Error Notification Methods
The EtherCAT Slave terminal uses the following methods to notify the Controller or EtherCAT master
that errors have occurred.
Type of error notification Overview Notification method
Sysmac error status This status reports errors that are
detected in the application section.
The status is assigned to the
TxPDO and notified cyclically to the
master.
Emergency message The emergency message reports
application level errors.
The error code contains the
CiA-defined error code, and an
additional error code in the unique
header area.
When an error occurs, the slave
notifies the EtherCAT master.
AL status This status reports errors related to
EtherCAT communications.
The ETG-defined method is used
for the error detection and error
code.
When an error occurs, the error is
written to the AL status register to
notify the EtherCAT master.
Slave Terminal
Error occurs.
Notification to the master
Error log
EtherCAT master
Sysmac error status
AL status
Emergency message
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