I think you are in good shape. We use both Lm90 and VersaPro. We use the same cable from PC' serial port to power supply of PLC. Of couse, VersaPro is a window environment but if you know Lm90, you shouldn't have big trouble to use VersaPro. Only thing is you can't import LM90 program into VersaPro. I saw some topic on web that is talking about converting Lm90, but I have not tried that. Mike