.CRN files?

Anybody seen .CRN files that are PLC related?

Customer dumped files and said they are part of PLC program - I've never seen them and Googling doesn't help at all...

Bump?

http://lra.unileon.es/sites/lra.uni...lc/Opto_22/Opto_22_PAC_CONTROL_User_Guide.pdf

Best I can find at a short look

I would prod them for more information, where did they get the files for one (file path). Hopefully the directory they got them from is a sub-directory for a machine or project and you can then prod them for information on that system.

Else if it is in a default place like my documents usually those paths are set up by the software and the file path could give some insight to at least which brand or type of PLC you are working with.