Parallel Interface; Connector Assignment - Dascom T2150 User Manual

Interfaces

Parallel interface

Connector assignment

144
The bidirectional parallel interface offers the so called "nibble" mode
of the IEEE1284 interface norm. This enables installation in accor-
dance 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. This guarantees
data transmission in blocks of 1 KB.
Direction
Connector no.
Printer–PC
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
18 1
36 19
←
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
– SIGNAL GROUND
– CHASSIS GROUND
– 5 V (Imax = 500 mA)
– SIGNAL GROUND
←
INIT (active low)
↔
ERROR (active low)
– SIGNAL GROUND
not used
←
SELECT IN
Transmission length: max. 2,0 m
User guide
Signal