Queue overflow errors in tag engine.

[Surcher]

I was testing the 310 tags in my tag database using the interactive server tester, when I encountered the queue overflow error. I am storing and retrieving values in a Allen Bradley SLC 5/04 PLC module. I am using RSLinx as an OPC server. I tried increasing the queue, but still ended up with the error. How will a queue overflow effect the performance of the tag engine and are there ways to better pinpoint the problem?

Thanks,


Mike Thomson
mthomson@progressivesys.com

[bryce]

Mike,
Check out these links...
http://digital.ni.com/public.nsf/3efedde4322fef19862567740067f3cc/862567530005f09e862567c700746a65?OpenDocument

http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/120e7a0c342df3fa86256812005c056c?OpenDocument

http://zone.ni.com/devzone/conceptd.nsf/2d17d611efb58b22862567a9006ffe76/bb7a08241bb0797c86256812005d1f3c?OpenDocument


and if they don't help, then write back with info like: Version of LabVIEW in the Help>> about LabVIEW

Have you ran the update to LV DSC to 6.0.2?
Find out by going to Start>>Settings>>Control Panel>>add/remove programs>> just LOOK for LV Datalogging and supervisory control version.

Version of Logos?... find the lkopc.exe Properties>>Version

Let me know if further problems exist
Thanks,

Bryce

[sarah 665]

I am having this same problem. My DIOs and AOs are working but my AIs are not reading in DSC although they are reading in MAX. When I use the interactive server tester, I get the same 'Input Queue Overload Error' Can you please comment on how you resolved this problem?

[Surcher]

I was using rs232 communication from a serial port and switched to ethernet. I still got an occasional queue overflow error when using the interactive server tester, but it did not affect the program or the data being transferred. The machine line has been running for 6 months without a DSC problem.