Analog Input Module Model :- 6ES7 331-7FK02-0AB0 Rated value(DC) :- 24V Reserve polarity protection :- Yes From load voltage L+(Without load), max :- 200mA from backplane bus 5VDC,max :- 50mA Power loss, typ. :- 1W No Of Analog inputs :- 8 No of analog inputs for resistance measurement :- 4 Permissible input voltage fro voltage input, max :- 20V; continuous; 75V for max. 1s(mark to space ratio 1:20) Permissible input current for current input, max:- 40mA Optically isolated, 8AI, Resolution 9/12/14 BITS,U/I/thermocouple/resistance interrupt, 1x20 PIN remove/insert W. backplane bus.