 "Wait on Notification from Multiple" output values can be wrong on timeout, Status: Filed with R&D (CAR#45E9BHJ1) |
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 Jan 14 2007, 10:03 PM
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 Changing the world, one VI at a time.  JKI  Posts: 1700 Joined: 22-October 02 From: San Francisco, CA Member No.: 17 Using LabVIEW Since:1995 LV:8.2.1 ,8.5 ,7.1.1 
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[CAR 45E9BHJ1]
The "Wait on Notification from Multiple" function seems to have a bug in how it sets "notifiers out" in the case of a timeout. If an instance of "Wait on Notification from Multiple" is called successively (for example, in a loop), calls that timeout will pass out notifiers (in "notifiers out") from previous calls which did not timeout. I would expect "notifiers out" to be an empty array if the function times out. See "TEST - Wait on Notification from Multiple.vi" (attached) for an example that demonstrates this bug. In this example, "Wait on Notification from Multiple.vi" is called twice in a For Loop. On the first iteration a notification is successfully received and on the second iteration a timeout occurs. On the second (timeout) iteration, the value of "notifiers out" contains the notifiers that there fired on the first call. I would expect "notifiers out" to be an empty array if the function times out. 
TEST___Wait_on_Notification_from_Multiple.vi ( 28.2K )
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Jan 14 2007, 10:03 PM
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Jan 15 2007, 01:59 AM
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 LV R&D Envoy NI  Posts: 1226 Joined: 15-August 06 From: Austin, TX Member No.: 5877 Using LabVIEW Since:2000 LV:8.5.1 ,. ,.
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