Hmm. There are safety-certified PLCs available, although they are several thousand USD. Seems to me that modern FPGAs are just as able to have subtle programming errors and failure modes as microcontrollers. Sean On Mon, Aug 23, 2010 at 9:45 AM, RussellMc wrote: > >From what he said, PLC is also a verboten word. > > > > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 Russell > -- > http://www.piclist.com PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .