西门子PLC  6ES7331-7KB02-0AB0

SIMATIC S7-300, ANALOG INPUT
SM 331, OPTICALLY ISOLATED,
2 AI, 9/12/14 BITS RESOLUTION,
U/I/THERMOCOUPLE/RESISTANCE,
INTERRUPT, DIAGNOSTICS,
1 X 20 PIN,
REMOVE/INSERT W. BACKPLANE BUS