SM331 EXTEND MODULE (6ES73317KF020AB0) SIMATIC S7-300, ANALOG INPUT
SM 331, OPTICALLY ISOLATED,
8AI, RESOLUTION 9/12/14 BITS,
U/I/THERMOCOUPLE/RESISTANCE
INTERRUPT, DIAGNOSTICS; 1X20PIN
REMOVE/INSERT W. BACKPLANE BUS AND SIMATIC S7-300, FRONT CONNECTOR(6ES73921AJ000AA0)
FOR SIGNAL MODULES
WITH SCREW CONTACTS,
20-PIN包含这么多东西