MicroLogixDriver Socket connection closed; DriverState was Connected

Information as below

  • Ignition Version: 8.1.23
  • Issue: Socket connection closed every 30 minutes
  • PLC: Allen Bradley Micrologix 1400

We did the ping testing at same time, there is no network issue. If expert have any idea, please share your experience with me, Thanks.


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Connection reset is coming from the ML1400 itself, or perhaps from a firewall along the path. Some firewalls don't like long-duration continuous connections. 30 minutes sounds suspiciously like a firewall timeout.

Using wireshark between the PLC and its network switch, and simultaneously between Ignition and its network switch, would provide a definitive answer.

Thank you, I'll try it.

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