GCC Technologies Elite XL-20/600 User Manual page 195

Appendix F: Interface connector pinouts
Use the following pinouts and descriptions of the various printer interface connectors if
you need to purchase or make a new cable. GCC is not aware of any commercially available
PC serial-to-RS422 cable.
RS-422 Serial:
IBM PC/XT (P1)
25 PIN SERIAL PORT
SIGNAL PIN DIRECTION
SHELL
CH. GND 1
TXD 2
RXD 3
RTS 4
CTS 5
DSR 6
SIG.GND 7
DCD 8
DTR 20
Uni-directional Parallel
PIN SIGNAL
1 /STROBE
2 D1
3 D2
4 D3
5 D4
6 D5
7 D6
8 D7
9 D8
10 /ACK
11 BUSY
12 PERROR
13 SELECT
14 /AUTOFD
BRAIDED SHIELD
NC
DESCRIPTION
Data Strobe
Data Bit 1
Data Bit 2
Data Bit 3
Data Bit 4
Data Bit 5
Data Bit 6
Data Bit 7
Data Bit 8
Acknowledge
Busy
Paper Empty
Select Out
Not Used
PRINTER (P2)
MINI-DIN 8
DIRECTION PIN
SHELL
1
2
3
4
5
NC 6
NC
7
8
DIRECTION
In to Printer
In
In
In
In
In
In
In
In
Out from Printer
Out
Out
Out
In
SIGNAL
HSKO
HSKI
TXDB-
SIG.GND
RXDB-
TXDB+
NC
RXDB+
F-1