Thanks for your reply Hood.
Yes my PLC has a RS232C Port. However, from my reading of the Install and Config manual and my lurking in the Modbus forum, I assumed that I needed to go though a Modbus device. That can be a problem of mine when I ASSuMe, if you know what I mean...
If I use the Serial port, how does Mach3 recognize the PLC, and would I need a plug-in or some other software?
Thank You for your time, it is Greatly appreciated. Bill