RSLogix 5000 Need Help how to use tags.

eshmx1977

Member
Join Date
May 2008
Location
Chihuahua
Posts
16
Hello all, it's been a long time since I've visited the forum last time, now here is the problem, I work for a big company as Phase 0-3 Controls Engineer as coordinator, however some weeks ago the Phase 0-2 Engineer quit and now I am on charge of their projects, the most urgent is to deliver a Tester Machine, he gave me some information and gave me some tips to complete the program but I am a little rusty in PLC programing, not understanding logig or planing a project, but using the RsLogix 5000 software, he planned the program using the SFC add on of the software, it is supposed he made all the tags that would be used in the program, now my job is only to write the ladder for each block on the SFC but in some transitions I found some tags that I don't know how to use in the ladder, for example, after one block the transition says "Test_All_Sensors_Passed & Test_Sequence.Test_Sensors.dn" I understand, the first it is a bit with the tag "Test_All_Sensors_Passed", if I search this in the program, i find the OTE bit that matches with this tag, but the second one I don't know how to program it in the ladder, there are several transitions using this sytaxis but in my knowlendge of RSLogix 500 I know this ".dn" corresponds to timers, counters, etc, I don't know if they are different used on RSLogix 5000.
Any help will be appreciated.:oops:
 
Test_Sequence.Test_Sensors.dn

Look for a UDT (User Defined Type) which has a member named Test_Sensors as a timer or counter. (Other instructions have '.dn' bits also, lkie communications instructions, but these are the most likely.) Now look for a tag named 'Test_Sequence' which is of the type which you found. Or go at it the other way around, find the tag then investigate the UDT it is based on. But in any case the '.DN' is equivalent to the /DN in a SLC500 or Micrologix.
 
Thank you Bernie, I didn't find the tag as UDT, I found it in Controller tags as "Test_Sequence.Test_Sensors.Status" then "Test_Sequence.Test_Sensors.Status" and finally "Test_Sequence.Test_Sensors.DN" as style Decimal type Boolean, I try to find it as a timer or counter but there is nothing, I understand it is used as bit only. Am I correct?
Thanks
 
The type of boolean says it is a single bit. But so would be the '.dn' bit from a timer. Without examining the entire program, including any UDT (or AOI - I forgot to include) definitions, it's hard to tell the precise usage.
 

Similar Topics

Anyone have a direct link or a copy of this old software? I have valid licenses for it on this PC but when I try and download it from rockwell it...
Replies
8
Views
2,453
Hello Forum, Having issues adding a module to the project. A 525 Powerflex drive when add the module rslogix program gives a fatal error and...
Replies
3
Views
1,965
Hi all, My client has a software running v21.03 and the last version I have installed is v20.04. I saw that the v21.03 is already available but I...
Replies
4
Views
1,881
I am aware of FTV, but I am looking for an alternative with an emulator that will work with a physical CompactLogix processor.. I was wondering...
Replies
20
Views
6,774
I have some st routines that i cant open due to my company dosnt have a st editor license. Could someone open these for me if i upload them or the...
Replies
12
Views
3,059
Back
Top Bottom