Controller inputs and outputs features rugged protection circuits to operate the in the harsh environment. All interfaces work up to 30VDC and has overvoltage, overcurrent protection. Output pins can control relays and stepmotors directly. Currently, we use a Cortex-M3 ethernet microcontroller, and running bare metal firmware in it. But we have a plan to migrate ARMv7 processor and run an embedded Linux, to improve security.