SM100 INTERFACE
45
6.5.2 RS232C
Wire
PC (9 PIN) TO SCALE RS232C PORT
6.5.3 Cash Drawer Connector
SM-100 uses normal phone mike plug to connect cash drawer and the scale.
Plug in the scale Connector of Cash Drawer
Pin
Output
Input
Pin
1 Not
used.
Not used
1
2
+ 8 V
V
2
3 GDD
GDD 3
4 Not
used.
Not used
4
RS-232
PC
Pin
Pin
1
Not used
Not used
1
2 RXD
TXD 2
3
TXD
RXD 3
4 DTR
Not
used 4
5 GND
GND 5
6 DSR
Not
used 6
7 DTR
Not
used 7
8 DSR
Not
used 8
9
Not used
Not used
9
RS232C Port
9 Pin
PC COM Port
9 Pin
1 pin
4 pin
1 pin
4 pin
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