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Chapter 9: Maintenance and Options
The pin description for the serial port on the cash register is shown below.
88
Pin No.
I/O
1
NC
2
IN
3
OUT
4
NC
5
N/A
6
NC
7
OUT
8
IN
9
OUT(+5V) Power supply for BCR
Pin number
Signal Name
Abbreviation
Receive Data
Transmit Data
Signal Grand
(Request to send)
(Clear to send)
RXD
TXD
SG
RTS
CTS
+5V
Alpha 600sc User's Guide
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