Parr-instrument DP8340R Series Manuel d'utilisateur télécharger pdf (Page 37)

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8-4. Jumper Setting

The serial interface is set to the RS-232C mode upon shipment from the factory.

When using in the 20mA current loop mode, it is necessary to set the jumpers.

The jumpers built into the Control Board allow for setting of functions shown in

the table. However, the Bottom Cover must be removed to perform this setting.

For setting the Jumper, disconnect the power source beforehand.

8-4-1. Removal of the Bottom Cover

Figure 8-4. Removal of the Bottom Cover

8-4-2. Setting of Jumper

Jumper

Setting Function

Factory

No.

Setting

OPEN RS-232C

SHORT Current Loop

A-C

B-C

Selection of Current Loop

Output (between TTY-TXD and

TTY-TXDR) Signal Polarity

(inversion possible) Consult

STAR MICRONICS for details.

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Parr-instrument DP8340R Series Manuel d'utilisateur Page 37