Omron CJ1W-ECT21 Operation Manual page 120

5 Troubleshooting
Indicator
ECAT ECAT
ERC ERH
RUN ERR
*1 *1 Not Lit
B B
Lit
*1. If the EtherCAT master requests transition to Safe-Operational state or Operational state, the Unit remains in the Pre-Op-
erational state, the ECAT ERR and ECAT RUN indicators are blinking.
*2. If the EtherCAT master requests transition to Safe-Operational state or Operational state, the Unit remains in the Pre-Op-
erational state, and the device variable *_AlStatusErr is TRUE.
5 - 10
Error Cause
RUN
--- CPU Unit A major fault
Major Fault occurred in the CPU
Unit.
CPU Unit An error occurred in
Watchdog the CPU Unit.
Timer Error
CPU Unit Servicing from the
Service CPU Unit was not
Monitoring completed within the
Error fixed interval.
The monitoring time
is normally 11 s.
An error occurred
while exchanging
data with the CPU
Unit.
I/O Bus An error occurred
Error while exchanging
data with the CPU
Unit.
I/O Refresh The I/O communica-
Error tion area does not
exist in the CPU
Unit.
This can occur when
the I/O communica-
tion area is set incor-
rectly, when the Unit
is mounted to a dif-
ferent CPU Unit with
a different number of
EM banks or when
EM has been con-
verted to file mem-
ory.
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)
Status of
Error device vari-
Unit opera-
log ables for
tion
(hex) CJ-series
Units
An emer- --- *_AlStatusEr
gency code r (Slave AL
is sent if Status Error)
EtherCAT
is TRUE.
Slave Unit
is in
Pre-Opera-
tional state.
An emer- 0001
gency code
is sent if
EtherCAT
0002
Slave Unit
is in
Pre-Opera-
tional state
and records
the error in
the error
log.
000E ---
0347 *_IORefErr
(I/O Refresh
Error) is
*2
TRUE.
Countermeasures
Clear the cause of
the error and then
restart the CPU
*2 Unit.
Replace the CPU
Unit.
Check and correct
the CPU Unit's
operating environ-
ment.
Check and correct
the CPU Unit's
operating environ-
ment and then
cycle power to the
CPU Unit.
Check the I/O com-
munication area
and change to the
correct allocation
and restart the
EtherCAT Slave
Unit.