Motorola SYMBOL MINISCAN MSXX04 User Manual
Page 72
6 - 2
Symbol MiniScan MSXX04 Series Integration Guide
lists the pin functions of the Symbol MS2204VHD.
Table 6-1
Symbol MS2204VHD Electrical Interface
Pin No.
Pin Name
Type*
Function
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.
*I = Input O = Output