6ES7331-7NF00-0AB0 模擬量輸入模塊(8路,15位精度)SIMATIC S7-300, ANALOG INPUTSM 331, OPTICALLY ISOLATED,8 AE; +/-5/10V, 1-5 V, +/-20MA,0/4 TO 20MA, 16 BIT (55 MS),1 COMMON POINT(50 V COM.),1 X 40 PIN