Data sheet 6ES7231-5QF32-0XB0 SIMATIC S7-1200, ANALOG INPUT, SM 1231 TC, 8 AI THERMOCOUPLE Supply voltage Rated value (DC) Yes 24 V DC Input current Current consumption, typ. 40mA from backplane bus 5 V DC, typ. 80mA Power loss Power loss, typ. 1.5W Analog inputs Number of analog inputs 8 Thermocouples permissible input voltage for current input 35 V (destruction limit), max. permissible input voltage for voltage input +-35 V (destruction limit), max. Technical unit for temperature measurement Degrees Celsius/degrees Fahrenheit adjustable Input ranges Yes Voltage 6ES7231-5QF32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 1/4No Current Yes J, K, T, E, R & S, B, N, C, TXK/XK(L) voltage range: 80 mV Thermocouple No Resistance thermometer No Resistance Input ranges (rated values), voltages Yes -80 mV to +80 mV 1 MOhm Input resistance (-80 mV to +80 mV) Input ranges (rated values), thermocouples Yes Type B Yes Type C Yes Type E Yes Type J Yes Type K Yes Type N Yes Type R Yes Type S Yes Type T Yes Type TXK/TXK(L) to GOST Thermocouple (TC) Temperature compensation No parameterizable Analog value generation for the inputs Measurement principle integrating Integration and conversion time/resolution per channel 15bit + sign Resolution with overrange (bit including sign), max. No Integration time, parameterizable 85 dB at 50 / 60 / 400 Hz Interference voltage suppression for interference frequency f1 in Hz Smoothing of measured values Yes parameterizable Errors/accuracies Temperature error (relative to input range), (+/-) 25 C 0.1%, to 55 C 0.2% total measurement range Repeat accuracy in steady state at 25 C (relative to 0.5% output range), (+/-) Interference voltage suppression for f = n x (f1 +/- 1 %), f1 = interference frequency 120dB Common mode interference, min. Interrupts/diagnostics/status information Alarms Yes Diagnostic functions Yes Can be read out Alarms 6ES7231-5QF32-0XB0 Subject to change without notice 12/04/2017 Copyright Siemens Page 2/4