Connection status in Ignition keeps changing between "Connected" and "Not Connected"

Applies To:

Opto 22 groov EPIC and SNAP PAC Driver module – available from Cirrus Link

Versions Affected:

3.3.0 through 3.4.6

Resolved In Version:

4.0.0

Symptoms:

If you have configured your PAC or EPIC control engine as an OPC-UA device in Ignition and the control engine is returning a float value that is a NAN (not a number), the connection status will keep switching between "Connected" and "Not Connected". The Ignition logs will have multiple "Opto 22 SNAP PAC Driver is now connected" messages. Floating point NAN values can come from an analog input or a floating point variable or table element.

Workaround:

Prevent floating point NaN values from being scanned into the SCADA.

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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