Hi, I have started a new job where we have a number of GE-PLCs. 90-70 programmed with Logic master, 90-30 programmed with Versapro, Vesamax, Koyo logic 30, Quick Panel programmed with unknown. From a little reading here, it seems that these software packages are limited to certain CPU's. I feel i will drown in the ocean of information. Is there any site, or document that might help me to get up to speed on which series and cpu requires which software. Where to start? Please Help?