貝加萊  X20AT4222+X20BM11+X20TB12 
``` ` 
 S7-200 PLC系列目前總共提供共5大類擴展模塊：數(shù)字量輸入擴展板EM221（8路擴展輸入）；數(shù)字量輸出擴展板EM222（8路擴展輸出）；數(shù)字量輸入和輸出混合擴展板EM223（8I/O，16I/O，32I/O）；模擬量輸入擴展板EM231，每個EM231可擴展3路模擬量輸入通道，A/D轉(zhuǎn)換時間為25μs，12位；模擬量輸入和輸出混合擴展模板EM235，每個EM235可同時擴展3路模擬輸入和1路模擬量輸出通道，其中A/D轉(zhuǎn)換時間為25μs，D/A轉(zhuǎn)換時間]100μs，位數(shù)均為12位。
  基本單元通過其右側(cè)的擴展接口用總線連接器（插件）與擴展單元左側(cè)的擴展接口相連接。擴展單元正常工作需要+5VDC工作電源，此電源由基本單元通過總線連接器提供，擴展單元的24VDC輸入點和輸出點電源，可由基本單元的24VDC電源供電，但要注意基本單元所提供的zui大電流能力。
①廈門莫格電氣自動化有限公司 

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