Motorola MSXX04 ユーザーズマニュアル

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Symbol MiniScan MSXX04 Series Integration Guide

This section describes the pin functions of the Symbol MS3204 scanner.

1

Trigger

I

Signals scanner to begin scanning session.

2

TXD

O

Serial data transmit output. Drives the serial data receive input on the 
device communicating with the scanner.

3

RXD

I

Serial data receive input. Driven by the serial data transmit output on 
the device communicating with the scanner.

4

 Not used

5

Ground

Power supply ground input and signal ground reference.

6

Power

I

5.0 VDC ± 10%

7

CTS

I

Clear-to-send handshaking input line, used only in conjunction with 
the RTS line. Optionally used by another device to signal the scanner 
to begin transmitting data.

8

RTS

O

Request-to-send handshaking output line, used only in conjunction 
with the CTS line. Optionally used by the scanner to signal another 
device that data is available to send.

9

Beeper/Download

I/O

During normal operation this signal functions as an external beeper 
drive line. This signal can sink 50mA of current to drive an external 
beeper, and is normally pulled up. This signal is also used to begin 
Flash Download operation when grounded externally during power 
up.