6DD1688-1AA0，西门子，西门子6DD主板，SIMADYN D INTERFACE SUBMODULE SS1 20MA (TTY)

6DD1681-0DJ1，西门子，西门子6DD主板，SIMADYN D INTERFACE MODULE SB31 FOR REDUNDANT CHANGEOVER CONTROL FOR SA30, SB30

6DD1601-0AF0，西门子，西门子6DD主板，SIMADYN D, PROCESSOR MODULE PG26 DC CURRENT 16 BIT , 16MHZ L-BUS , 4 BI AL., 4BO TWO SITOR INTERFACES

6DD1688-0AE1，西门子，西门子6DD主板，SIMADYN D COMMUNICATION SUBMODULE SS51 FOR CS7 , MASTER INTERFACE FOR BUS SYSTEM SINEC L2 DP

6DD1688-0AE2，西门子，西门子6DD主板，SIMADYN D COMMUNICATION SUBMODULE SS52 FOR CS7 , MASTER INTERFACE FOR BUS SYSTEM SINEC L2 DP

6DD1601-0AE0，西门子，西门子6DD主板，SIMADYN D, PROCESSOR MODULE PG16 LINE-COMMUTATED CONVERTERS