About The Serial Port - Royal 601sc Instruction Manual

About the Serial Port

Your cash register includes a serial
port on the right side of the cash
register. You can connect items to the
cash register using this serial port. You
can only connect one device to the
serial port at a time.
To use the barcode reader, you must connect it to the serial port. You can
also connect a computer to the serial port to use the RegisterLink software.
To connect your computer to the serial port, you need a null-modem serial
cable. If you purchased the Alpha 601, a serial cable was included in the
box. If you purchased the Alpha 600 or if you lost your cable, you can
purchase this cable directly from Royal or at any computer supply store.
The pin description for the serial port on the cash register is shown below.
Alpha 600/601 User's Guide
Pin No. I/O
1 NC
2 IN
3 OUT
4 NC
5 N/A
6 NC
7 OUT (Request to send)
8 IN
9 OUT(+5V) Power supply for BCR
Pin number
Signal Name Abbreviation
Receive Data
Transmit Data
Signal Grand
(Clear to send)
About the Serial Port
RXD
TXD
SG
RTS
CTS
+5V
97