Parallel I/O Ieee 1284 - Dascom 2610 User Manual

Tally Dascom 2610
7.3.1

Parallel I/O IEEE 1284

The bidirectional parallel interface offers the "nibble" mode of IEEE1284 interface. This
enables installation in accordance with Windows "Plug & Play".
The standard parallel interface is able to transfer data at a speed of max. 30, 000 bytes per
second. When the receiving buffer is full, the data input is blocked until the data buffer is
empty.
Connector assignment
Connector no.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19–30
31
32
33
34–35
36
Direction
Printer–PC
←
STROBE (active low)
←
DATA 1
←
DATA 2
←
DATA 3
←
DATA 4
←
DATA 5
←
DATA 6
←
DATA 7
←
DATA 8
→
ACK (active low)
↔
BUSY
↔
PAPER EMPTY (PE)
↔
SELECT
↔
AUTO FEED (active low)
not used
一 一 一
SIGNAL GROUND
一
CHASSIS GROUND
←
5 V (Imax = 500 mA)
↔
SIGNAL GROUND INIT
一
(active low) ERROR
(active low) SIGNAL
←
GROUND not used
SELECT IN
Transmission length: max. 2,0 m
97
Signal