SIMATIC S7-200,数字量输入EM 221,仅用于S7-22X CPU,16DI, 24V DC,漏/源,输
SIMATIC S7-200, DIGITALEINGABEEM 221, NUR FUER S7-22X CPU,16 DE, DC 24V, P/M-SCHALTENDSIMATIC S7-200, DIGITAL INPUTEM 221, FOR S7-22X CPU ONLY,16DI, 24V DC, SINK/SOURCE INPUT
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