Seiko Instruments DPU-30 Bedienungsanleitung PDF herunterladen (Seite 24)

4-2

into V+ and V-pins. (To avoid voltage drops.)

When supplying the power through the DC socket, be sure to leave V+

and V- unconnected. Never supply the power into V+ and V- terminals,

and never short V+ and V- terminals.

∗ Use terminal numbers 22, 23 or 26 as the signal ground for RS-232C.

∗ Short terminal numbers 25 and 26 to feed the paper.

∗ SEL LED lights up at the time on-line by connecting it to terminal numbers 27 and 28.

∗ Paper near end sensor:

This printer does not have the paper near end function. However, this function can be

built in by mounting a device such as a photo sensor.

NEAR_A: Pull up it with +4.75 to +5.1 V through the current limit resistance.

NEAR_OUT: The logic of NEAR_C is inversed and output.

Example:

The following diagram describes how a device such as a photo sensor is mounted to

use.

NEAR_A

NEAR_K

NEAR_C

NEAR_E

CN2

220Ω

ﾌｫﾄｾﾝｻ等

2. DC socket terminal layout

Connector (Socket) : HEC0470-01-630 (Hosiden)

Polarity:

Table 4-2 DC Socket Terminal Assignment

No. Signal name Direction Function

1 DC+8.7V − Power input

2 GND − Ground

∗ Supply of the power through the interface connector terminals is available, instead of the DC

socket terminal.

When supplying the power through the interface and power connector

terminals, do not connect the DC socket.

(Center plus)

Photo sensor, etc

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Seiko Instruments DPU-30 Bedienungsanleitung Seite 24