IO Transfer in RS Logix

[friedmators 0]

Trying to figure out why when I lift the hard IO signals, the ZSO/ZSC signals don't change. Picture below. I am an Ovation guy so this is all new to me. I am sure it is something beyond simple. Thanks for any response.

[PLCMentor.com 60]

At first glance that looks like you have used that same tag for the ZSO somewhere else in your program or possibly that the rung is not being scanned. Do a cross reference on your tag and check for duplicates. Also, make sure that the routine you have is being scanned (ie, is the main routing or has a JSR from the main)

[friedmators 0]

Thanks for the reply. I actually figured it out. They had some simulation routines that were running bypassing all the I/O. Soon as i disabled that bit and went to run mode everything started working.

[daba 4]

Then you should report back, and measures should be put in place to make sure that any simulation "frigging" is removed before a project goes to site. Fundamental really, whoever sent the software to site in the state it was needs his a$$ kicked.