GE Mark VIeS - Page 465

348
Description Intermittent communications on IONet1 - Packet loss exceeded [ ]
Possible Cause
• Power cycled on I/O producer (controller or I/O pack or module)
• IONet malfunction
• I/O message corruption
• Communication errors occurred on more than 5% of data transmissions on IONet1
Solution
• Check for evidence of pack restart (diagnostic alarms, error logs).
• Faulty Ethernet cable from pack to network switch and/or from switch to controller. Replace cable(s).
• Replace the I/O pack or module.
• Faulty network switch; place the I/O pack or module's Ethernet cable into an empty port. If problem persists, replace the
network switch.
349
Description Intermittent communications on IONet2 - Packet loss exceeded [ ]
Possible Cause
• Power cycled on I/O producer (controller or I/O pack or module)
• IONet malfunction
• I/O message corruption
• Communication errors occurred on more than 5% of data transmissions on IONet2
Solution
• Check for evidence of pack restart (diagnostic alarms, error logs).
• Faulty Ethernet cable from pack to network switch and/or from switch to controller. Replace cable(s).
• Replace the I/O pack or module.
• Faulty network switch; place the I/O pack or module's Ethernet cable into an empty port. If problem persists, replace the
network switch.
350
Description Intermittent communications on IONet3 - Packet loss exceeded [ ]
Possible Cause
• Power cycled on I/O producer (controller or I/O pack or module)
• IONet malfunction
• I/O message corruption
• Communication errors occurred on more than 5% of data transmissions on IONet3
Solution
• Check for evidence of pack restart (diagnostic alarms, error logs).
• Faulty Ethernet cable from pack to network switch and/or from switch to controller. Replace cable(s).
• Replace the I/O pack or module.
• Faulty network switch; place the I/O pack or module's Ethernet cable into an empty port. If problem persists, replace the
network switch.
Common I/O Module Functionality GEH-6855_Vol_II System Guide 465
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