Pin Confi Guration Serial And Parallel Port - Braillo 400 S 3 Series User Manual

BRAILLO NORWAY AS
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6.7 Pin confi guration serial and parallel port
Data transmission from the computer to the printer can be done in two ways, either serial or parallel.
The serial goes through an RS 232 C interface, and the parallel is using a Centronics compatible
interface. Both connectors are of the 25 pin D-sub type.
Pin confi guration 25 pin male D-sub contact RS 232 C (serial port):
Pin no. 1 FG
Pin no. 2 Tx
Pin no. 3 Rx
Pin no. 4 RTS
Pin no. 5 CTS
Pin no. 6 DSR
Pin no. 7 GND Signal ground
Pin no. 8 DCD Data carrier detect
Pin no. 9 PU
Pin no. 20 DTR Data terminal ready
The printer is only using pin no. 4 (RTS) as a control signal. When this is set to logic low (from
the printer), the computer must stop sending text immediately. Pin no. 2 (Tx) is used to transmit
XON/XOFF control signals to the computer. The text sent to the printer is received through pin no. 3
(Rx). All other outputs from the printer are set to logic high.
Wiring diagram for the enclosed serial cable
Standard RS 232 C cable, 25-25 pin:
25 pin female
1 FG
2 TD
3 RD
4 RTS
5,6 CTS, DSR
7 SG
8 DCD
20 DTR
Frame Ground
Transmit data
Receive data
Request to send
Clear to send
Data set ready
+ 12V (Logic high)
25 pin female
FG
RD
TD
CTS, DSR
RTS
SG
DTR 20
DCD 8
Output
Input
Output
Input
Input
Input
Output
Output
1
3
2
5,6
4
7
B 400 Series 3
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