KB91122
Published: October 24, 2025
Revision: 2.0

ENET2 disabled after firmware update


Applies To:

PAC Manager, when used with the following SNAP PAC R-series controllers:

  • SNAP-PAC-R1, SNAP-PAC-R1-FM, SNAP-PAC-R1-W, SNAP-PAC-R1-B
  • SNAP-PAC-R2, SNAP-PAC-R2-FM, SNAP-PAC-R2-W

Versions Affected:

R10.3a to R10.5c

Resolved In Version:

R10.6a


Symptoms:

After installing firmware on an R-series controller that had ENET2 configured and operating, ENET2 is disabled. (If you can physically look at the controller, you will notice that the indicator lights are off.)
 

Workaround:

After installing firmware, restart your R-series controller by either of these methods:

  • In PAC Manager, send the Restart Device from powerup command (found in the Status Write > Operation dropdown list of the Inspect Opto 22 Device window) through the ENET1 interface.
  • Cycle power.

Resolution:

Opto 22 has resolved this issue.

Questions?

Contact: Opto 22 Product Support.
Phone: 800-835-6786 or 951-695-3080
Email: support@opto22.com


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