The data transmission lines are crossed as in a null modem cable. The control lines are
connected in such a way that the system treats the printer as if a CTS/RTS handshaking
were implemented. This corresponds to the PC standard for printers, although the printer,
which also corresponds to the standard, is equipped with DTR/DSR handshaking.
No handshaking is effective for the data transmission from the printer to the system when
using this cable; the system must have a sufficiently large reception buffer for reception
data (e.g. for 64 bytes).
Serial Interface to the Customer Display
The serial interface for connecting a Wincor Nixdorf customer display (e.g. BA 63) is a
V.24 (RS-232C) interface.
Technical Data :
Data Transmission:
serial, full duplex
Synchronization:
asynchronous
Handshaking:
CTS / RTS control
Baud Rate:
9600
Parity:
odd
Data Bits:
8
Stop Bit:
1
Signal Level:
MARK
= logical “1": -3V to
-15V
SPACE = logical ”0":
+3V to
+15V
Connector Type:
9-pin D-sub connector
System
Printer
GND5
7 GND
TXD 3
2 TXD
RXD 2
3 RXD
CTS 8
5 CTS
RTS 7
4 RTS
DSR 6
6 DSR
DTR 4
20 DTR
Interfaces
Appendix
GB - 90
