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Tally Dascom 1140
61
10.2 USB Interface
The USB interface conforms to the Universal Serial Bus 2.0 Specifications. It supports the
Full Speed mode at 12 Mbps. It uses the “B” type USB connector.
10.3 Serial interface
Serial interface pin assignment
Serial interface connector diagram
Serial interface wiring diagram
Pin
Signal name
Description
1
2
RXD
Receive data
3
TXD
Send data
4
DTR
Data terminal ready
5
SGND
Signal ground
6
DSR
Data set ready
7
RTS
Request to send
8
CTS
Clear to send
9
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