Hardware
Connector
Version 1.03
3-10
3.6.2 25pol sub-min-D male
To connect the NetPorty II with the PC it is possible to use the
Centronics (LPT) port directly or to use the adapter cable to
use the RS232 (COM) port. In both cases the pinning of the
25pol sub-min-D male is the same.
Connector definition:
Pin I/O Usage Description
1 Input Parallel Strobe
2 Input Parallel D0
3 Input Parallel D1
4 Input Parallel D2
5 Input Parallel D3
6 Input Parallel D4
7 Input Parallel D5
8 Input Parallel D6
9 Input Parallel D7
10 Output Parallel /acknlg
11 Output Parallel Busy
12 Output Parallel Paper empty
13 Output Parallel Slct
14 Input Parallel /autofd
15 Output Parallel /error
16 Input Both
high -> RESET; low -> Operational
/init DTR (Porty RESET in): switch level 2.5V
input range -40..+40V, low speed 10ms
A weak pull-up and pull-down is necessary to
define with special mounting whether the
reset line is active or not if this line is not
connected.
17 Input Parallel /slct in
18 X Both Ground
19 Input Serial TX (PC -> Porty)
20 Output Serial RX (Porty -> PC)
21 Input Serial RTS
22 Output Serial CTS
23 Input Serial Free input (DTR)
24 Output Serial DSR
25 Input Serial Free input (as serial master it can be used as
CD or RI)
and also optional power input source
