3-73
3 Error Tables
NJ-series Troubleshooting Manual (W503)
3-1 Errors by Source
3
3-1-5 Errors in the EtherCAT Master Function Module
84290000 hex Process Data
Transmis-
sion Error
Sending process
data failed.
• It was not possible to send the
EtherCAT frame during the
EtherCAT communications
period.
• The frame transmission jitter
exceeded the limit.
S NJ-series
CPU Unit
Built-in Ether-
CAT Port
User’s Manual
(Cat. No.
W505)
842B0000 hex Process Data
Reception
Timeout
Process data
reception timed out.
• The Ethernet cable is broken.
• The Ethernet cable for Ether-
CAT is disconnected.
• A general-purpose Ethernet
hub is connected.
• The master failed.
• The slave failed.
• The Ethernet cable is too long.
• The CPU Unit task period is too
short.
• Noise
S Same as
above.
842C0000 hex Process Data
Communica-
tions Error
An error occurred in
process data com-
munications.
• A slave left the network even
though the disconnection oper-
ation was not performed.
• Noise
• The slave failed.
S Same as
above.
102F0000 hex
(Ver. 1.03)
EtherCAT
Slave Backup
Failed
The backup opera-
tion for an Ether-
CAT slave ended in
an error.
• There is no connection
between the EtherCAT master
and the slave (Link OFF).
• An error caused an incorrect
EtherCAT master status.
• The EtherCAT network configu-
ration information does not
agree with the physical net-
work configuration.
• The request to the EtherCAT
slave failed.
• The EtherCAT master was tem-
porarily unable to perform the
processing because it was exe-
cuting other processing.
• Initialization of the EtherCAT
slave failed.
• It was not possible to read the
backup parameters from the
EtherCAT slave.
S Same as
above.
Event code Event name Meaning Assumed cause
Level
Reference
Maj Prt Min Obs Info
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