Using No-protocol Communications

Section 6-3

6-3 Connections

Connecting to a Bar Code Reader via RS-232C

The connection examples in this section show only the basic connection dia- grams. We recommend that appropriate noise countermeasures be taken in ac- tual applications, including the use of shielded twisted-pair cables. Refer to 2-3 Wiring for actual wiring methods.

The following diagram shows the connections between an OMRON V500-se- ries Bar Code Reader and the RS-232C port on the Serial Communications Board.

Serial Communications Board

V520-RH21-6

(D-sub, 9-pin female connector)

Bar Code Reader

 

 

 

Signal

Pin

V509-W012 Cable

Pin

Signal

Serial Communications Board

V520-RH21-6

V509-W012Bar Code Reader

Cable

100 VAC

5-V external power supply (e.g., 82S-0305)

Note If the external device has a FG terminal, connect the shield wire to ground at both the external device and the Serial Communications Board to prevent faulty op- eration.

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Omron CQM1H-SCB41 operation manual Connections, Connecting to a Bar Code Reader via RS-232C