Possible -25 (Port not locked) errors in controller's message queue

Applies To:

Firmware for:

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

Versions Affected:

All versions prior to R10.0h

Resolved In Version:

R10.0h

Symptoms:

In a PAC Control strategy with the Autorun flag set, if one or more I/O units are not accessible when the controller powers up, you may see -25 (Port not locked) errors in the controller's message queue.

Workaround:

In PAC Control Config mode:

Edit each I/O unit (right-click on the I/O unit, then select Modify) and uncheck "Enable communications from control engine".
Modify the strategy and add the following instructions in the first block of the Powerup chart:
- Delay (Sec) with a value of 1
- Enable Communication to All I/O Units

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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