Description
PNP集电极开路输出为+V高电平,当输出OUT端和PLC输入相连时,电流从PLC的输入端流入,从PLC的公共端流出,此即为PLC的源型电路的形式,即:PNP集电极开路输出只能接源型或混合型输入电路形式的PLC
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