PME 5.5 Delete a Variable First?

[Chris Elston]

Is there anyway in PME to change a setting somewhere where I can delete a variable I know exists in Ladder? This is obviously for protection, but I don't care, I want to delete it, and cause an error. I wish I had a right click "Find All" option? So you could right click on any variable and find them all in your program.

[Steve Bailey]

In order for a variable to be used in the program it must be in the variable table. If you add a new address to an existing program, a new variable will be created automatically. So you can't delete a variable that is being used. That would be a handy addition, but until they add it, here is the procedure. Click on the "Search" menu, then "Find in 'Your_target_name'". In the popup that appears, type in the address you're looking for. You can type it as %I00007 or %I7 or 7I and PME will find where it is used. If you select the "Implicit Addresses" checkbox it will also find the address even if it is buried inside a WORD reference. Each usage will be listed in the Feedback zone. You can double click on each entry to jump to the rung where it is used.

[Chris Elston]

At your next golf outing with GE Software Engineers, can you mention it? LOL

[Steve Bailey]

The next time I have lunch with Jack Welch, I'll ask him if still has enough clout to pull it off. He retired shortly after I left the distribution chain, but he still owns enough stock so they have to pay attention to him. If that doesn't work, we'll have to delegate the task to Russ.

[Smoke]

If you open the Reference tab its like a find all but it wont find things Implicit even the same bit with a different alias. Edited October 12, 2006 by Smoke

[Tank_Harvey]

Deleting Used Variables - I think this is breaking the rules what processor are you using? I know that the RxXi series of processors are primarily OPC based engines. i.e. The processors are happy to run with only having tags declared; these tags do not have to be assigned to a particular address only type (INT, WORD, BOOL) eg. In a 90-70 if you need a temp register you would generally assign it to a %L. In Rx7i just declare a tag called "Junk", declare it as type INT and that it. No more address juggling. I understand that PME was written with OPC in mind, their for variable names "Tags" is how it joins the program together not by specific addresses. Deleting a used variable in PME is like using a coil in LM90 with out assigning an addressed bit to it.