MAIN CHARACTERISTICS range of product MODICON M238 LOGIC CONTROLLER product or component type COMPACT BASE product specific application NOT APPLICABLE discrete I/O number 24 discrete input number 6 INPUT CONFORMING TO ENIEC 61131-2 TYPE 1 discrete input voltage 24 V discrete input voltage type DC discrete output number 4 FAST OUTPUT discrete output voltage 24 V DC number of I/O expansion module 7 [Us] rated supply voltage 24 V DC memory description INTERNAL RAM 1000 KB data backed up variables of type retain and retain persistent internal battery 3 days 22 h 10 yr mounting support 35 MM SYMMETRICAL DIN RAIL COMPLEMETARY CHARACTERISTICS discrete input logic POSITIVE LOGIC SINK FAST INPUT number of common point 1 FAST OUTPUT sensor power supply 19.2..30 V DC voltage state 1 guaranteed >= 15 V INPUTFAST INPUT voltage state 0 guaranteed