Freelance AI810 DTM - No Channel Updates on DTM Observe Window
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Yes, there is known issue with AI810, AO810 and DO820 in DTM version 6.0.1, which is shipped with the Freelance Software 2016SP1RU1.
A bugfix is currently in Test.
I'm not aware whether the DTM version shipped with F2016 (which was a 5.3.5022..) will still work with F2016SP1 but if you don't have the choice to wait for the fix you could try it out.