Powered CLICK CPU can function as complete PLC system by itself. It includes 8 inputs and 6 outputs, available in 4 combinations of built-in I/O types, as well as 11 option modules for flexible system configuration up to 142 I/O. Two 24 Vdc power supply options, with 0.5 or 1.3 A outputs, can be used to power PLC, which supports 8K steps of Flash EEPROM program memory and 8K words of data memory. There are also 2 built-in RS232 RJ12 communications ports.