KB91399
Published: June 19, 2026
Revision: 1.0
Importing a chart containing legacy I/O into a strategy not enabled with Legacy options may hang PAC Control
Applies To:
PAC Control Basic
PAC Control Professional
Versions Affected:
R8.0a to current
Symptoms:
When attempting to import a chart that contains legacy I/O units into a strategy that is not enabled with Legacy options, PAC Control may hang.
Workaround:
Before importing the chart, perform the following:
- Open the strategy in PAC Control.
- In Configure mode, select File > Strategy Options.
- On the Legacy tab, enable all options by clicking Enable for each.
- Click OK and save the strategy (File > Save Strategy).
- Import the chart.
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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