Move

i have come across a Move command with

Source N7:4
Dest _3N2


can any body help me with whats the destination location is? (i know when rung is true value in source will be moved to destination)..but what is _3N2 here

Nick.

This is just an interesting symbol. I didn't think you could start one with an underscore but apparently you can. Go to View-Properties - Comment Display. Under 'Symbols' click 'Show Symbols & Address' and apply it.

Bernie..thanks for the reply

I am trying to validate a manufacturing line (pharma company)..unfortunately all i have right now is printed code with me. Any idea what it could be.

Help needed

If your printed copy includes a cross reference, the symbol name and corresponding address may be listed there.

Hope this helps.

bernie_carlton said:

This is just an interesting symbol. I didn't think you could start one with an underscore but apparently you can....

Click to expand...

IIRC, older version of Logix did not allow you to begin a symbol name with a number but a '_' was OK. I also used to use this method with symbol names that needed to begin with a number. Later versions of Logix allow symbol names to begin with a number which sometimes helps in making the symbol match the devce tagname.

I still use the '_' to designate symbol names that are locally scoped.

Alaric's right here, Logix platforms don't like ANYTHING to start with a number (including program routines Grrrr...), so in many cases where a numeric symbolic ID is desired, it is preceeded with an underscore.

I use that somewhat annoying trick to force the routine listing in the project tree to stay sorted in a logical (rather than alphabetical) order.