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7-3. RS-232C connection

KP uses sending, receiving and Signal Grand (SG) only and does not use any other control signal.

In general PC as controlling is done by control signal, it does not operate just by connecting 3 signal

wires. As the wiring process in the connector, differs on how the PC controls the control signal, see the

instruction manual of the PC that is being used.

Precautions

RS-232C cable length is maximum 15m. NEC make PC98 series 9 pin

connector is 'Wiring example 1' and 25 pin connector is connected as

shown in 'Wiring example 2'.

[Wiring example 1]

[Wiring example 2]

25 pin connector for PC

（PC-98 series）

14 15 16

18 19

20 21

1312

１

２

３

４

５

６７

８９

RS CS DR

9 pin connector for PC

（PC-98 series/IBM-PC･AT）

６７

８９

１

２

３

４

５

ER CS

DR RS

Chino KP3000 User Manual

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