Installation manual

Publication 1394-IN002B-EN-P — February 2004
4-4 Troubleshooting Status Indicators
Troubleshooting the
SERCOS Network Status
LED
The SERCOS Network Status LED is located on the system module
control board and visible with the system module door open. Refer to
figures 2.1 and 2.2 for the location of the SERCOS Network Status
LED.
1
Refer to Fiber Optic Cable Installation and Handling Instructions (publication 2090-IN010A-EN-P) for more
information.
If the SERCOS
Network Status
LED is:
Status is: Potential Cause is: Possible Resolution is:
Steady Green Communication ready No faults or failures. System is ready.
Steady Orange Control board failure
Control board failure.
• Cycle power.
• Replace system module.
Hardware failure. Replace system module.
Flashing Green
Establishing
communication
System is still in the process of establishing
SERCOS communication.
Wait for steady green LED status.
Node address setting on the 1394 system module
does not match SERCOS controller configuration.
Verify proper SERCOS base address switch
setting (refer to figures 2.1 and 2.2 for switch
location).
Flashing Red
No communication
1
Loose fiber-optic connection. Verify proper fiber-optic cable connections.
Dirty fiber-optic cable connectors. Remove foreign material from connector.
Broken fiber-optic cable. Replace fiber-optic cable.
Weak fiber-optic signal due to long fiber-optic cable. Set SERCOS transmit level to HIGH.
Distorted fiber-optic signal due to short fiber-optic
cables.
Decrease SERCOS transmit level of previous
device in SERCOS ring.
Receive fiber-optic cable connected to SERCOS
transmit connector and visa versa.
Check proper SERCOS fiber-optic cable
connections.