Irinos Measurement System

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Navigation: Users Manual Irinos-System > Pin assignment

IO-Bus M9 connector for IR-MASTER and I/O-Boxes

➔ Connector type M9 4-pin, female

For a reliable operation of the IO-Bus, it is recommended to use ready-made cables (different types available).

The IO-Bus must be terminated at both ends. It is integrated into the Irinos-Box IR-MASTER. Thus pin 4 (Term) is not used. However, for compatibility reasons, it should be connected to pin 1 (GND). The TERM signal must not be connected between both ends of the cable.

Connector M9 for M9

Pin	Description	Note
1	GND	Ground
2	DATA_H	Data high
3	DATA_L	Data low
4	TERM	Termination detection (input; not used at IR-MASTER)