Tally T2040 - Parallel Interface

➤ Parallel interface The bidirectional parallel interface offers the so called “nibble” mode of
the IEEE1284 interface norm. This enables installation in accordance
with Win 95 “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 trans-
mission in blocks of 1 KB.
Connector no.
Direction
Printer– PC
Signal
1
←
STROBE (active low)
2
←
DATA 1
3
←
DATA 2
4
←
DATA 3
5
←
DATA 4
6
←
DATA 5
7
←
DATA 6
8
←
DATA 7
9
←
DATA 8
10
→
ACK (active low)
11
↔
BUSY
BACK
QUIT
?
PRINT
Reference manual Interfaces
146