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KB52620
Activated B6 watchdog causes random analog output values
Revision:  1.0
Published:  7/17/2006
Applies To
Firmware for:
B6
Versions
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.

MORE INFORMATION

The analog watchdog function did not work on versions 9159 or 9159A.

Relevant Downloads
No relevant downloads have been specified.
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