Activated B6 watchdog causes random analog output values

Applies To:

Versions Affected:

Problem was introduced in version: 9159B

Symptoms:

If the B6 watchdog function is activated, unpredictable values are written to the analog output points.

As an example, all of the points on a B6 are configured as outputs and are configured to go to a value of 0 when a watchdog occurs. The values read back from the analog outputs after a watchdog occurs, may read as shown in the following:

Point 0 reads as 1 Point 8 reads as 5137
Point 1 reads as 259 Point 9 reads as 275
Point 2 reads as 5125 Point 10 reads as 277
Point 3 reads as 263 Point 11 reads as 23
Point 4 reads as 5129 Point 12 reads as 281
Point 5 reads as 259 Point 13 reads as 27
Point 6 reads as 269 Point 14 reads as 285
Point 7 reads as 15 Point 15 reads as 31

Resolution:

Opto 22 is researching this issue.

Questions?

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

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