6DD1606-1AD0，西门子，西门子6DD主板，SIMADYN D PROCESS MODULE PT20M TECHNOLOGY 16 BIT, 20MHZ WITH COUPLING MEMORY 64KB FOR L-BUS

6DD1681-0EH1，西门子，西门子6DD主板，SIMADYN D INTERFACE MODULE SE47.1 BUS INTERFACE MODULE DUST 4

6DD1606-1AC0，西门子，西门子6DD主板，SIMADYN D, PROCESSOR MODULE PT20 TECHNOLOGY 16 BIT, 20 MHZ L-BUS, 16 BI AL., 8 BI , 16 BO 7 AE , 4AO, 2 SENSING INPUTS

6DD1681-0EC0，西门子，西门子6DD主板，SIMADYN D INTERFACE MODULE SE42 DISTRIBUTOR PRK (PARALLEL SUBFRAME CONNECTION)

6DD1606-1AB0，西门子，西门子6DD主板，SIMADYN D PROCESSOR MODULE PT2M TECHNOLOGY WITH MAILBOX

6DD1681-0EB3，西门子，西门子6DD主板，SIMATIC TDC, BINARY INPUT MODULE SB61 GALVANIC ISOLATION24/48V , 8BI 24 OR 48 V DC, LED-DISPLAY