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6 Specifications
6.6.2
RS-232C
The RS-232C on the printer is DB9 female. It transmits data bit by bit in asynchronous
start-stop mode. The figure below shows its pinout.
5
4
9
8
Pin
Signal
1
N/A
2
RxD
3
TxD
4
N/A
5
GND
6
N/A
7
RTS
8
CTS
9
+5V
Note Pin 9 is reserved for KDU. Do not connect it if you are using a
computer as the host.
3
2
1
7
6
Description
Shorted to Pin 6
Receive
Transmit
No Connection
Ground
Shorted to Pin 1
Request to Send
Clear to Send
Reserved for KDU (keyboard device unit)
62
Interfaces
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