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Friday, June 6, 2008

Weld tracking on your ISOGEN Isometrics

Sometimes when you work closely with the fabrication effort, you may need to track the welds on your isometrics. With ISOGEN we have switches that will allow you to track the welds per line or drawing, even distinguishing between them.
As you may have guessed, we need to go to our old friend the Options Switch Editor. Once there you need to adjust switches 53&54WELD PLOTTING/NUMBERING”.
If you use the Find Options Switch tool it will bring you to the first page of the Welding tab. Now since every fabricator wants the information in their format, we’ll just go over the basics to get you started. You will be able to smooth out the “rough edges” to get it just like what you want after we are done.
The first thing we need to change is the selection for “Welds to be numbered/Welds to be Plotted”. The default selection there is “None to be numbered” and “All to be plotted”, we need it to be 180° out from that, or in other words we need to select the option for “All welds to be numbered and plotted”.
Next is the section for Weld Numbering Sequences, that one is up to you and the project, but I selected to restart the numbering on Each Drawing. If you are using spool identifiers, you may also want to select the option to allow Spool Iso Weld Numbers to match Full Iso Weld Numbers.

The next section is for starting from “1” on each type of weld, that’s not a bad choice either.
Of course it’s up to you as to if you use numeric or alphabetic identifiers.
Now on page 2 of the Welding tab, you can adjust switch 75 “WELD NUMBER ENCLOSURES”. The main thing folks adjust here is the weld prefix added to the weld number. Another one is switch 77 “WELD NUMBERS at SO FLANGES and PADS”, which is defaulted to Two Weld Numbers at Slip-On Flanges. For those Victalic fitting users, you will notice the ability to track the Clamps as well.

Page 3 of the welding tab is switch 78 “SUPPORT WELD NUMBER ENCLOSURES", which with CADWorx is a mute switch.
So if you make the changes shown/outlined above, and generate an isometric, you will notice that the welds are numbered, and depending on your selection, the FFW is called out differently than the other shop welds (just like the one in the red circle below).

Now let take a look at that Weld list (that’s the option of switch 53/54 that is a dropdown below the Welds to Plot/Number Chart. The default is “No Weld/Operations Box”, your choices are “Plot Weld Summary Box” or “Plot Operations Summary Box”. What I chose was the Operations Summary Box just as an example.

Now the other thing that we need to address is the use of a Weld Definition File (*.WDF). Much like the 2 styles of Material Lists that everyone has become accustomed to, there are also 2 styles of Weld Lists as well. And just like the MDL, it is either column based (like a style 2 MDL) or positional based (like a style 3 MDL).

I created a positional based MDL which looks like this:


'WELD-NO' 457
'N.S.' 468

And before you ask, the coordinates are in millimeters (mm’s), so you have a chance to use your units converter. Of course you may wish to locate your table elsewhere on your drawing.

Now before anyone “freaks out”, yes that is a dynamic block being used for the weld list. There are plenty of folks that also include a dynamic block for their B.O.M. as well so that they can get lines between each line item. If you do want to create and use a dynamic block in your ISOGEN template, simply create the dynamic block, and save the definition in your isometric style template drawing (also known as a drawing frame). Just like any other graphic changes you make to your isometric style template; you have to save the drawing in the AutoCAD 2000 format. But this way it will be there as soon as you open your ISOGEN isometric drawing.
To learn more about the different options available for weld tracking, you may want to review the Options (OPL) Editor Welding Help file. You can access that from your Start>Programs menu, under your CADWorx Plant – ISOGEN>Options (OPL) Editor programs.

[Ask your local ECAD office for more information about training opportunities on Dynamic Blocks as well as training for ISOGEN.]

1 comment:

Anonymous said...

Hi guys
do you have any documentation listing/describing the functions within the isogen MDL,WDF or DDF for example "STYLE2-DATA-ITEMS" i am trying to customise my STYLE2 material list but cant find any docs to describe these functions.