AutoCAD P&ID General

New Member
Posts: 1
Registered: ‎04-03-2013
Message 1 of 2 (270 Views)

Signal Line Acquisition of "Engineering Items" Tag

270 Views, 1 Replies
04-03-2013 01:55 PM


First off, I've found this post ( very useful, but I am interested in something slightly different.


I would like to have my signal lines automatically acquire the "Tag" value of any "Engineering Items" to which they are connected.  Specifically, I want signal lines to acquire "Tag" from "Equipment" or "Inline Assets\Hand Valves".  I do not want to make two different instances of a signal line, one that acquires Tag from Equipment, and one that acquires it from Hand Valves.  In short, I would to define a custom property on Signal Lines which automatically :
  -Pulls the "Tag" attribute from whatever Engineering Item it is connected to, and if it is ambiguous or not present, leave it as "?".


This functionality would be equivalent to what already happens when you drop a 3-way valve on piping -- essentially, many-to-one acquisition which will just 'not acquire' if it is ambiguous.  How do I achieve this? 


Thanks in advance,


Posts: 215
Registered: ‎02-20-2012
Message 2 of 2 (240 Views)

Re: Signal Line Acquisition of "Engineering Items" Tag

04-04-2013 02:31 PM in reply to: jjmilburn

Hi Josh,


I've played around extensively with acquisition rules in P&ID 2013 and know only of a limited way for you to achieve what you are looking for. This will not require you to make or use two different signal lines, you can still use the regular signal line, but the equipment tag  and hand valves tag will appear in their two respective Tag acquisition properties since you can only point to one class property per acquisition rule. Essentially you would have to create a specific property in the Singal Lines class for each class that contains its own "Tag" property. If "Tag" was defined within "Engineering Items", you would only have to create one acquisition property, but since you are specifically wanting both the Equipment and Hand Valves tags, you will have to create an acquisition property for 'Equipment - Tag', and also one for 'Hand Valves - Tag' since they are split up. To me, this is ok from a reporting standpoint since you can always create a calculated field within Report Creator that allows you to manipulate/drop/add a tag that you want or don't want. You also have the luxury of displaying both tags in serarate columns if you so desire. If you are passing the info through the signal line to another object via an acquisition chain, you'll just have to add these two acquisition properties at each 'link' class within the chain.


What are you ultimately trying to achieve, by the way? Just acquiring both tags into an object that is linked to both a valve and a piece of equipment? Once you have it, what do you want to do with that data?


I hope this helps point you in the right direction!




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