If you have to upload and convert an LM90 program to GE ME then be very careful. The last one that we did all of the PID blocks appear to be working but they are not. We found that the P instruction was getting a "0" value from somewhere. We ere also not able to write to it in any way. We had to take to original prog and pload to Versa Pro. We did get the prog running and rverything is fine now but be careful.