Sharp PC-A500 Manual do Utilizador descarregar pdf (Página 34)

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The SD terminal resistance between the No. 12 and No. 13 pins of CN1

(serial connector)

RD terminal resistance of pin No. 24 and 25 in CN1

(serial connector)

Terminal resistance of MJ1 (modular jack 1)

Not used

Setting of Dip Switches

Setting of Terminal Resistance

• When connecting a PLC and RS-422/485 by 4-wire method, turn DIPSW 7 and 8 on.

• When connecting a PLC and RS-422/485 by 2-wire method, turn DISW 7 on.

• When using Modular jack 1 for multi-link 2 connection or using a card recorder or added serial I/O, turn

DIPSW 6 on.

• Modular jack 2’s terminal resistance is always on.

Keep DIPSW 1, 2, 3, 4, 5 and 8 (not used) OFF.

1 Setting of Dip Switches

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Sharp PC-A500 Manual do Utilizador Página 34