6ES74217BH010AB0

SIMATIC S7-400,數字量輸入M 421,電隔離,16 DI,24V DC,帶0.05 MS輸入延時,報警,診
SIMATIC S7-400, DIGITAL INPUT SM 421, GALVANICALLY ISOLATED,16 DI, 24V DC WITH 0.05 MS INPUT DELAY,ALARM, DIAGNOSTICS
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