SMC Networks EX510-GPR1 Series Operation Manual page 52

■Wiring
•Internal circuit and wiring
•EX510-DXB1: Input unit for 2-wire type (1 connector 2-input type)
•EX510-DXN1: Input unit for NPN (1 connector 2-input type)
•EX510-DXP1: Input unit for PNP (1 connector 2-input type)
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No.EX##-OMI0032-C