Data sheet 6ES7331-1KF02-0AB0
 SIMATIC S7-300, Analog b SM 331, Isolated 8 AI, resolution 13 bits 
U/I/resistor/Pt100, NI100, NI1000, LG-NI1000, PTC/KTY, 66 ms conversion time; 
1x 40-pole
 Input current
 from backplane bus 5 V DC, max. 90 mA
 Power loss
 Power loss, typ. 0.4 W
 Analog bs
 Number of analog bs 8
 ● For resistance measurement 8
 permissible b voltage for voltage b (destruction limit), 
max.
 30 V; 12 V continuous, 30 V for max. 1 s
 permissible b current for current b (destruction limit), 
max.
 40 mA
 Input ranges
 ● Voltage Yes
 ● Current Yes
 ● Thermocouple No
 ● Resistance thermometer Yes
 ● Resistance Yes
 Input ranges (rated values), voltages
 ● 0 to +10 V Yes
 — Input resistance (0 to 10 V) 100 k?
 ● 1 V to 5 V Yes
 — Input resistance (1 V to 5 V) 100 k?
 ● 1 V to 10 V No
 ● -1 V to +1 V Yes
 — Input resistance (-1 V to +1 V) 100 k?
 ● -10 V to +10 V Yes
 — Input resistance (-10 V to +10 V) 100 k?
 ● -2.5 V to +2.5 V No
 ● -250 mV to +250 mV No
 ● -5 V to +5 V Yes
 — Input resistance (-5 V to +5 V) 100 k?
 ● -50 mV to +50 mV Yes
 — Input resistance (-50 mV to +50 mV) 100 k?
 ● -500 mV to +500 mV Yes
 — Input resistance (-500 mV to +500 mV) 100 k?
 ● -80 mV to +80 mV No
 Input ranges (rated values), currents
 ● 0 to 20 mA Yes
 — Input resistance (0 to 20 mA) 100 ?
 ● -10 mA to +10 mA No
 6ES73311KF020AB0
 Page 1/3 9/13/2024 Subject to change without notice
 © Copyright Siemens 
● -20 mA to +20 mA Yes
 — Input resistance (-20 mA to +20 mA) 100 ?
 ● -3.2 mA to +3.2 mA No
 ● 4 mA to 20 mA Yes
 — Input resistance (4 mA to 20 mA) 100 ?
 Input ranges (rated values), thermocouples
 ● Type B No
 ● Type C No
 ● Type E No
 ● Type J No
 ● Type K No
 ● Type L No
 ● Type N No
 ● Type R No
 ● Type S No
 ● Type T No
 ● Type U No
 ● Type TXK/TXK(L) to GOST No
 Input ranges (rated values), resistance thermometer
 ● Cu 10 No
 ● Ni 100 Yes; Standard/climate
 — Input resistance (Ni 100) 100 M?
 ● Ni 1000 Yes
 — Input resistance (Ni 1000) 100 M?
 ● LG-Ni 1000 Yes; Standard/climate
 — Input resistance (LG-Ni 1000) 100 M?
 ● Ni 120 No
 ● Ni 200 No
 ● Ni 500 No
 ● Pt 100 Yes; Standard/climate
 — Input resistance (Pt 100) 100 M?
 ● Pt 1000 No
 ● Pt 200 No
 ● Pt 500 No
 Input ranges (rated values), resistors
 ● 0 to 150 ohms No
 ● 0 to 300 ohms No
 ● 0 to 600 ohms Yes
 — Input resistance (0 to 600 ohms) 100 M?
 ● 0 to 6000 ohms Yes
 — Input resistance (0 to 6000 ohms) 100 M?
 Thermocouple (TC)
 Temperature compensation
 — beterizable No
 — internal temperature compensation No
 — external temperature compensation with 
compensations socket
 No
 Characteristic linearization
 ● beterizable Yes
 — for thermocouples No
 — for resistance thermometer yes; Pt100 standard/air con.; Ni100 standard/air con.; Ni1000 standard/air con.; 
LG-Ni1000 standard/air con.
 Cable length
 ● shielded, max. 200 m; max. 50 m at 50 mV
 Analog value generation for the bs
 Integration and conversion time/resolution per channel
 ● Resolution with overrange (bit including sign), max. 13 bit
 ● Integration time, beterizable Yes; 60 / 50 ms
 ● Basic conversion time (ms) 66 / 55 ms
 ● Interference voltage suppression for interference 
frequency f1 in Hz
 50 / 60 H