Repeated use of 'Set TPO Percent' PAC Control command, keeps output point turned on

Applies To:

SNAP-PAC-S1
SNAP-PAC-R1
SNAP-PAC-R2
SNAP-UP1-ADS
SNAP-UP1-M64
SNAP-UP1-D64
SNAP-LCE

Versions Affected:

Problem was discovered in version: R7.0a
Problem is fixed in version: R8.1a for SNAP PAC

Resolved In Version:

Problem is fixed in version: R8.1a for SNAP PAC

Symptoms:

Changing the TPO percentage on an output point results in the TPO cycle restarting immediately, using the new percentage. This can be a problem if the percentage is written in a programming loop and is updated faster than the cycle period, not allowing the output to ever turn off.

Workaround:

To work around this problem, add a delay to the strategy logic to make sure the programming loop does not loop through faster than the TPO cycle period.

Resolution:

Opto 22 has resolved this issue for SNAP PAC control engines.

Questions?

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

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