UDT breakout

Detailed story at the bottom of this post.
The real question is do you know of a clean way to breakout all of the sub elements in a UDT? I have 66 elements in this UDT. They are BOOL, REAL, & Timers. They are mixed around so I have 11 BOOL, 3 REAL, a few BOOL, a few REAL, a few TIMER, etc. etc. I have 12 of these TAG that are 66 sub elements long.
I have to break each sub element out in to individual tags. The only way I see to do this is BRUTE FORCE. There are no arrays, no BOOL packed into DINT. Straight forward tags in a UDT.

XIC TAG1.BOOL1 OTE TAG1_BOOL1
XIC TAG1.BOOL2 OTE TAG1_BOOL2
XIC TAG1.BOOL3 OTE TAG1_BOOL3
MOV TAG1.REAL1 TAG1_REAL1
MOV TAG1.TIMER1.ACC TAG1_TIMER1_ACC
.
.
.
XIC TAG2.BOOL1 OTE TAG2_BOOL1
.
.etc


So this will be around 1000 rungs by the time I am finished. Do you have a cleaner way. Each sub element has to be its own tag when I am finished.

I don't know anything about how Siemens is programming their system. I don't even have Siemens software. Please don't ask a question, because I am undereducated to answer your questions about Siemens.
I have a customer that is having Siemens build their BAS (Building Automation System) This customer has a redundant CLX system L55 Ver 13 running a cold room. The system is certified by the DEA (not the correct terminology but you get the point) I can't change any of the PLC in these ControlLogixs. Siemens is trying to read data from the controllers and can only read the Controller scoped tags. They can not read program scoped or controller scoped UDT.

I am going to use a CompactLogix to Message the ControlLogix and do a tag read. The put all of this code in the CompactLogix so Siemens can look at the individual tags of this controller.

JeffKiper said:

Detailed story at the bottom of this post.
The real question is do you know of a clean way to breakout all of the sub elements in a UDT?

Click to expand...

horrible - Use Excel to code your rungs using vlookup on the UDT data type to determine the data type of the elements hence the type of rung that you are going to create
Also use string manipulation functions Left, Right, Len(ength) and Mid

eg formula in excel in cell A1 = A2 & A3 will concatenate the contents of cell A2 and A3

This means that you can be accurate and not make any mistakes on the 1000 rungs

Alternate If all using the same UDT is to program 1 UDT then use copy paste and then replace only in a forward direction (the Find does not wrap) 12 times

I use excel all the time on big jobs like this. I think it is the only way to make sure your code is consistant.

Make an AOI for Breakout of Tag Info from UDT. Then you have 66 rungs of logic. Just change UDT input parameter.

thought - can you just use an alias tag at controller level to the UDT member?

MichaelG said:

thought - can you just use an alias tag at controller level to the UDT member?

Click to expand...

Yes.

the only thing is they would just show up in the unused tag list. Because that would require no Logic.

cwal61 said:

Make an AOI for Breakout of Tag Info from UDT. Then you have 66 rungs of logic. Just change UDT input parameter.

Click to expand...

Assuming you can add an AOI to the original CLX, I would go this route.

If you can't, brute force it is!

One other option to consider is doing this in Structured Text -
Use Search / Replace with
<Find Where> set for Current Routine
<Direction> set for down


// TAG1
TAG1_BOOL1 := TAG1.BOOL1;
TAG1_BOOL2 := TAG1.BOOL2;
TAG1_BOOL3 := TAG1.BOOL3;
TAG1_REAL1 := TAG1.REAL1;
TAG1_TIMER1_ACC := TAG1.TIMER1.ACC;

//TAG2
TAG2_BOOL1 := TAG2.BOOL1;
TAG2_BOOL2 := TAG2.BOOL2;
TAG2_BOOL3 := TAG2.BOOL3;
TAG2_REAL1 := TAG2.REAL1;
TAG2_TIMER1_ACC := TAG2.TIMER1.ACC;

//TAG3
TAG3_BOOL1 := TAG3.BOOL1;
TAG3_BOOL2 := TAG3.BOOL2;
TAG3_BOOL3 := TAG3.BOOL3;
TAG3_REAL1 := TAG3.REAL1;
TAG3_TIMER1_ACC := TAG3.TIMER1.ACC;

.
.
.
.

//TAG99
TAG99_BOOL1 := TAG99.BOOL1;
TAG99_BOOL2 := TAG99.BOOL2;
TAG99_BOOL3 := TAG99.BOOL3;
TAG99_REAL1 := TAG99.REAL1;
TAG99_TIMER1_ACC := TAG99.TIMER1.ACC;

No unused tags...

You should ask them if they can read arrays. If so you could read each UDT and pack it into an INT or DINT array using a synchronous copy (CPS) and let the Siemens guy figure out how to pull it all apart.

Keith