Corrective Actions When The Cpu Unit's Indicators Are Lit Or Flashing - Omron CJ1W- ECT21 Operation Manual

5 Troubleshooting
 Others
Indicator
ECAT ECAT
ERC ERH RUN
RUN ERR
--- --- --- ---
Not B
Lit
5-2-2 Corrective Actions When the CPU Unit's Indicators are Lit or
Flashing
Use the following table to troubleshoot the system if the CPU Unit's ERR/ALM indicator is lit or flashing
when the EtherCAT Slave Unit is mounted.
Error
An I/O verification error occurred.
A CPU Bus Unit setting error
occurred.
A CPU Bus Unit error occurred.
An I/O bus error occurred.
Refer to the CPU Unit's operation manual for details.
5 - 12
Error Cause
--- IN Port The IN port link is
Link OFF turned off after
turned on once.
OUT Port The OUT port link
Link OFF is turned off after
turned on once.
Lit Restart The Unit was
restarted.
The voltage is
present in the Unit
immediately after
power is turned
OFF. The power is
turned ON in this
state.
• Confirm that the Unit is connected properly.
• Check the I/O table with the I/O table verification operation and cor-
rect it if necessary. After correcting it, perform the I/O table create
operation.
• The CPU Bus Unit model registered in the I/O tables does not match
the model of CPU Bus Unit actually mounted. Check the I/O tables
with the I/O table verification operation and correct it if necessary.
After correcting the I/O tables, perform the I/O table create operation.
• Confirm that the Unit is connected properly.
• Restart the Unit. Replace the Unit if it doesn't restart.
• Confirm that the Unit is connected properly.
• Restart the Unit. Replace the Unit if it doesn't restart.
Error
Unit opera- CIO
log
tion area
(hex)
--- --- (n+13)
bit 14
(n+13)
bit 15
(n+12)
bit 01
Corrective action
CJ-series EtherCAT Slave Units Operation Manual (W541)
Countermeasures
Connect the Ether-
CAT communica-
tions cable.
Turn OFF the error
bit of AL status
from the EtherCAT
master.