KB90206
Published: July 6, 2022
Revision: 3.0

MQTT may not scan all public tags after watchdog changes for digital output channels


Applies To:

Firmware for the following groov EPICs:

  • GRV-EPIC-PR1
  • GRV-EPIC-PR2
Firmware for the following groov RIOs:
  • GRV-R7-MM1001
  • GRV-R7-MM2001

Versions Affected:

For groov EPICs: 3.3.0 to 3.3.3
For groov RIOs: 3.3.0 to 3.3.3

Resolved In Version:

For groov EPICs: 3.4.0
For groov​ RIOs: 3.4.0


Symptoms:

If you are using MQTT on a groov EPIC processor or groov RIO module to scan tags, MQTT may not scan all public tags if there is a change to the watchdog value and the watchdog enable/disable field on digital output channels.

Workaround:

After changing the watchdog value and the watchdog enable/disable field for a digital output channel, restart the MQTT service (from the groov Manage Home page, click MQTT > Restart Service).

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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