Extra tag count when upgrading AC450 to AC800M
There is a significant increase in tag count since an upgrade from AC450 to AC800M. I've seen one of the previous posts that mention faceplate inheritance must be switched off for all the DATS. How is this done?
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DAT faceplate inheritance was turned of on Advant Master faceplates to reduce the tag count on an AC450 (or any Advant Master) based system . That is most likely the previous post that you have seen.
But yes, you can also do the same on any 800xA based system with *ANY* type of controller connected. The basic rule for 800xA "Tags" is that One Faceplate = One Tag.
Inheritance is configured in the Object Type definition ...
Object Type Structure
-> MyObjectType (Object)
--> MyObjectType Type Definition (Aspect)
---> Aspect Control (Tab)
Change the "Faceplate" to be "Use As Template"
The DAT license cheat loop hole has been closed out in the later versions of 5.1 (see reelase notes).
Before this was corrected, every DAT object without a faceplate (because someone has taken off inheritance of the faceplate aspect) incorrectly reduced the TAG count by one even though DAT is exempted and should be "neutral" to TAGS.
Normally, converting from AC400 to AC800 reduces tag count.
With AC400, each I/O object (AI, DO, DI, DO) has a faceplate and hence require a TAG license.
E.g. One AC400 motor object with a handful of interlocks and various signals to drive output, feedbacks, etc ... easily end up with 5-10 I/O signals = 5-10 TAGS in the end.
In AC800 you can have multiple IO variables connected to an object type carrying a single faceplate. This motor now only need one TAG.