GeBE E + F GmbH • www.oem-printer.com • GeBE Doc.No.: SMAN-E-413-V4.1 Easy-Loading Thermal Printer GPT-4352(-60)
Parallel Interface
10
7.3 Parallel Interface
Name
Meaning
Comment
BR1 or
J3
BR2 or
J3
Feedback of the AUTO_LF output of the host on SELECT:
Allows a Windows system to report printer - SELECT
back to itself.
SELECT interrupt
BR1 : default: open
J3 : default: 2-3 open, auto LF not fed back
to Select.
BR2 : default: open
J3 : default: 1-2 closed, select active
7.3.1 Centronics Adapter with SUB-D 25 pin Connector
The cable GKA-407 connects the adapter with the printer (at J5).
The cable GKA-302 produces a 1:1 connection of the adapter and the parallel port of a PC.
7.3.2 PIN-seizure at the SUB-D 25 of the adapter
Pin
Signal
Input/Output
Comments
1
2
Strobe/
DB0
I
I
Accepting data DB0 ..7 with rising edge
3
4
5
6
DB1
DB2
I
I
DB3
DB4
I
I
7
8
9
10
DB5
DB6
I
I
DB7
/Acknowledge
I
O
11
12
13
14
BUSY
Paper End
O
O
Select
Auto Line Feed
O
I
Becomes high with the falling edge of /Strobe
See error messages
See error messages
Can be connected with select (Windows operation)
15
16
17
18-25
/Fault
/Input-Prime
O
I
Select in
GND digital
I
See error messages
used for initiating Reset
used for initiating the wake up sequence
7.2.3 Timing of the Parallel Interface
Time
Name
min (
µs)
typ (
µs)
max (
µs)
Comments
Tack
T
ba
Ackn.pulse width
Delay busy ackn.
17
5.5
T
bs
T
dsu
T
hold
T
sb
Busy Setup
Data Setup
0.5
0.5
Data hold
delay Strobe-Busy
0.5
0.5
Time before the next strobe
With open-collector triggering, the minimum time is 3.5 µs. This value can be changed by integratingdifferent RC filters.
T
strb
Strobe pulse width
0.5
BBBBuuuussssyyyy
DDDDaaaatttteeeennnn
SSSSttttrrrroooobbbbeeee////
AAAAcccckkkknnnn////
Tstrb
Thold
Tsb
Tack
Parallele Schnittstelle
Tba
Tdsu
Tbs
Adapter GCT-4382-10 with
Centronics Interface
