© 2022 Nordson Corporation
4-14
Ethernet Network Troubleshooting
All Ethernet Network faults will activate the alarm relay. Use the fault messages on the
Alarm screen along with this table to diagnose and correct Ethernet network problems.
Use the Network Status and Node Configuration screens to diagnose problems with the
remote nodes.
Table 4-5 Ethernet Network Troubleshooting
Error
Code
Message/Condition
Meaning/Correction
901
I/O error
Check Ethernet wiring. Remote node could be disconnected from network or
turned off.
902
Port or socket open error
Programming error. Contact Nordson technical support.
903
Serial port already open
Programming error. Contact Nordson technical support.
904
TCP/IP connection error
Check Ethernet wiring. Remote node could be disconnected from network or
turned off.
905
TCP/IP Connection closed
by remote peer fault (any
remote node fault)
Ethernet network communication with the remote node has been lost. This fault
may be a normal response to removing electrical power from the remote node.
If the remote node is an in/out positioner or reciprocator and communication is
lost while operating in Auto mode, the machine will move to the Park position.
Check the Network Node Status screen. If communication is lost the node icon
should turn red. If no nodes are red, check the Network Node Configuration
screen to find the device associated with the faulted node IP address.
If multiple node faults are displayed:
Check the electrical power supply to all faulted nodes.
Check the Ethernet switch in the main electrical control panel for electrical
power and proper operation. The switch power LED should be lit and the
network connection LEDs should be flashing. Replace the switch if necessary.
Check the network cable and connections between the Ethernet switch and the
iControl 2 PC.
If a single node fault is displayed:
Check the electrical power to the remote node.
Check network cables and connections between the remote node and the
Ethernet switch in the main electrical control panel.
906
Socket library error
Programming error. Contact Nordson technical support.
907
TCP port already bound
Programming error. Contact Nordson technical support.
908
Listen failed
Programming error. Contact Nordson technical support.
909
File descriptors exceeded Programming error. Contact Nordson technical support.
910
No permission to access
serial or TCP port
Programming error. Contact Nordson technical support.
Continued...
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