Siemens 6ES7531-7NF00-0AB0SIMATIC S7 1500 analog input module AI 8xU I HF, up to 24 bit resolution, accuracy 0. 1%, 8 channels in groups of 1; common mode voltage: 30 V AC 60 V DC, Diagnostics; Hardware interrupts Measured values ?? scalable, measuring range adjustment, Calibrate in RUN; Delivery including infeed element, shield bracket and shield terminal: Front connector (screw terminals or push in) to be ordered separately