C
curt wuollet
Hostile takeover :^) of a commercial PLC is certainly not the easiest way or the best. But it's probably the only way to change what I _have_ to work with. The PLC hardware thing is not that difficult, it's just registers on a bus and level translation and sometimes an A/D and D/A convertor. That is, it's not much different from any _old_ uP design where the I/O was off-chip. Until quite recently when they started doing ASICs, most of the chips were off the shelf items and how they work was no mystery. The packaging costs money because the tooling is only practical for reasonable volumes. But I digress......
Regards
cww
Regards
cww