GE Mark VIeS - Communication Lost from S Processor; Communication Lost from T Processor

327
Description Communication lost from S processor
Possible Cause
• IONet or hardware malfunction
• R or T processor in redundant system lost communication with S processor
• Missing cable from the controller to the Unit Data Highway (UDH) network switch
Solution
• Go online with the S processor. Verify that the processor is in the Controlling state. If not communicating or in
Controlling state, restart the processor.
• Check for disconnected IONet cables or malfunctioning switches.
• Rebuild and download the application.
• Check for a defective Ethernet cable to network switch.
• Check for a defective network switch:
− Place the Ethernet cable into empty port.
− If the problem persists, replace the network switch.
328
Description Communication lost from T processor
Possible Cause
• IONet or hardware malfunction
• R or S processor in redundant system lost communication with T processor
• Missing cable from the controller to the Unit Data Highway (UDH) network switch
Solution
• Go online with the T processor. Verify that the processor is in the Controlling state. If not communicating or in
Controlling state, restart the processor.
• Check for disconnected IONet cables or malfunctioning switches.
• Rebuild and download the application.
• Check for a bad Ethernet cable to network switch.
• Check for a bad network switch:
− Place the Ethernet cable into empty port.
− If the problem persists, replace the network switch.
50 GEH-6855_Vol_II GEH-6855_Vol_II Mark VIeS Functional Safety Systems Volume II
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