Omron CJ1W-ECT21 Operation Manual page 52

2 Nomenclature and Installation
Name
ECAT ERR Red
RUN Green
ERC Red
ERH Red
2 - 4
Color Status
Lit • Special Unit Error
• ESC Initial Error
Blinking • CPU Unit Major Fault
• CPU Unit Watchdog Timer Error
• CPU Unit Service Monitoring Error
• I/O Refresh Error
• I/O Bus Error
• Sll Unit Verification Error
• Mailbox Setting Error
• Verification Error
• Illegal State Transition Request Received
• Restart
Single flash • CPU Unit Major Fault
• CPU Unit Watchdog Timer Error
• CPU Unit Service Monitoring Error
• I/O Refresh Error
• I/O Bus Error
Double flash I/O Communication Error (Process Data WDT Error)
Flickering ESC Error
Not lit No error
Lit The Unit is in operation.
Not lit The Unit is not in operation.
Lit The Unit has an error.
• CPU Unit Faulty
• Special Unit Error
• ESC Error
• Sll Unit Verification Error
• Special Unit Memory Error
• I/O Communication Error (Process Data WDT Error)
• Mailbox Setting Error
• Verification Error
• Illegal State Transition Request Received
• ESC Initial Error
Flashing The Unit has an error.
• EtherCAT Slave Unit Faulty
Not lit The Unit is normal.
Lit The CPU Unit has an error.
• Duplicate Unit Number
• CPU Unit Faulty
• I/O Table Not Registered
• CPU Unit Major Fault
• CPU Unit Watchdog Timer Error
• CPU Unit Service Monitoring Error
• I/O Refresh Error
• I/O Bus Error
Not lit The CPU Unit is normal.
CJ-series EtherCAT Slave Units Operation Manual for NJ-series CPU Unit (W542)
Meaning