The C-Bus Module is used to provide a C-code API between a Clipsal C-Bus PCI interface, and an application program. Application programs can be on small embedded micros with no OS and only a few K of RAM, thru to Windows & Linux.
PLCduino is an open hardware alternative for industrial and home automation. It uses the well known ATmega chips as main processor, the same used on Arduino. This means that PLCduino is code-compatible with all arduino sketches.