I was wondering if there are PLC IDEs which have a function which allows 2 PLC programs (in either ladder code or compiled) to be compared to each other?
We are making some minor changes to a PLC ladder logic and want to do a compare as a regression test, i.e. to check that we haven't inadvertently altered other parts of the PLC code which are intended to remain the same.
Not sure what the acronym IDE™sis.....but in the case of Rockwell there is a compare utility that compares every tag, tag structure and all logic and generates a report showing every difference from processor revision to date of add in instruction and everything in between.
Senior Control Systems Enginee