6DD1681-0DH1，西門子，西門子6DD主板，SIMATIC TDC, BINARY OUTPUT MODULE SB71 8 BI, 24 OR 48 V DC LED-DISPLAY, GALVANIC ISOLATION

6DD1681-0DH0，西門子，西門子主板，SIMADYN D INTERFACE MODULE SE37 8BO, 24V, LED, GALVANIC ISOLATION

6DD1600-0BA0，西門子，西門子主板，SIMATIC TDC, CPU550 64-BIT CPU MODULE WITH DIGITAL INPUTS

6DD1688-0AE0，西門子，西門子主板，SIMADYN D COMMUNICATION SUBMODULE SS5 FOR CS7 MASTER INTERFACE FOR BUS SYSTEM SINEC L2 FMS

6DD1688-0AD0，西門子，西門子主板，SIMADYN D COMMUNICATION SUBMODULE SS4 FOR CS7 , SIMADYN D PROTOCOLL DUST 1,2,3,7

6DD1681-0DE1，西門子，西門子主板，SIMADYN D INTERFACE MODULE SA30 2X8-CHANNELS REDUNDANT