Serial interface – Argox CP Series User Manual
Page 69
69
Compact Printer Series - User
’s Manual
Serial Interface
The RS232 connector on the printer side is a female, DB-9.
Pin
Signal
Description
1
No function
Shorted to Pin - 6
2
Received Data,
RxD
Input. Serial “Received Data”
3
Transmitted Data,
TxD
Output. Serial “Transmitted
Data”.
4
No function
No connection
5
GND
Signal Ground
6
No function
Shorted to Pin - 1
7
Request to Send,
RTS
Output. Used as the control
signal for “H/W Flow Control “
8
Clear to Send, CTS
Input. Used as the control
signal for “H/W Flow Control”
9
+5V
Output. Pin 9 is reserved for
KDU (keyboard device unit)
Note :
Pin 9 are reserved for KDU (keyboard device unit), therefore
do not connect these pins if you are using a general host like
a PC.