Programmable Logic Controller (PLC) unit with I/Os, 24 x digital inputs (24Vdc; including 6 high-speed 10kHz counters), 16DO (16 x digital outputs, 24Vdc; Sink), 8Ksteps (Program), 8Kwords (Data) memory capacity - with RS-232C communication capability - 24Vdc supply voltage - with USB port - DIN rail mounting