GPC554 is a general purpose industrial programmable logic controller
(PLC) based on Philips 80C552 processor running at 22.1184Mhz (8051 standard
12 cycles core).
This controller could be used as a stand-alone
controller or in conjuntion with one of the following extension:
ZBX84, ZBX168, ZBX246, ZBX324.
The complete system (CPU+Extension) could be mounted on a standard industry DIN rail.