6ES7331-7HF01-0AB0 模拟量输入模块(8路,14位精度,快速)SIMATIC S7-300, ANALOG INPUTSM 331, GALVANICALLY ISOLATED,8 AI, 14 BIT, 0.052MS/CHANNEL,CURRENT, VOLTAGE, INTERRUPTS,DIAGNOSTICS,1 X 20 PIN,FIT FOR ISOCHRONE MODEIMPROVED DP-CYCLE TIME FORISOCHRONE MODE