KB86871
Published: May 6, 2026
Revision: 2.0

Inspecting a communication handle variable in PAC Control Debug mode may cause a timeout error for SNAP PAC controllers and groov EPIC processors


Applies To:

Firmware for the following groov EPICs:

  • GRV-EPIC-PR1
  • GRV-EPIC-PR2
Firmware for the following SNAP PAC controllers:
  • SNAP-PAC-S1, SNAP-PAC-S1-FM, SNAP-PAC-S1-W
  • SNAP-PAC-S2, SNAP-PAC-S2-W
  • 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
  • SoftPAC

Versions Affected:

All versions


Symptoms:

When inspecting a communication handle variable in PAC Control Debug mode or any other program, you may encounter a communication timeout error with a SNAP PAC controller or groov EPIC processor running the PAC Control Engine.

Workaround:

Avoid accessing communication handle variables in the strategy.

Resolution:

Opto 22 is investigating this issue.

Questions?

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


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