Epson EPL-7500 User Manual - Page 184

Interface Specifications, Parallel interface, Pin assignments for the parallel interface

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Interface Specifications The printer has the following resident interfaces: • Parallel • RS-232/RS-422 serial l AppleTalk Parallel interface Your printer is equipped with an B-bit parallel interface. Pin assignments for the parallel interface The parallel interface connector pin assignments and a description of the interface signals are shown in the table below. Signal Return Pin Pin 1 19 2 20 3 21 4 22 5 23 6 24 7 25 a 26 9 27 10 28 Signal Direction Description STROBE DATA 1 DATA 2 DATA 3 DATA 4 DATA 5 DATA 6 DATA 7 DATA 8 ACKNLG IN IN IN IN IN IN IN IN IN OUT The STROBE pulse to read data in. Pulse width must be more than 0.5 microseconds at the receiving terminal. These signals represent Information of the 1st to 8th bits of parallel data, respectively. Each signal IS at HIGH level when data is logical 1 and at LOW level when it is logical 0. About a 10-microsecond pulse. LOW indicates that data has been received and that the printer is ready to accept more data. This signal is output as a pair with BUSY. 8-10 Technical Specifications

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Interface Specifications
The printer has the following resident interfaces:
• Parallel
• RS-232/RS-422 serial
l
AppleTalk
Parallel interface
Your printer is equipped with an B-bit parallel interface.
Pin assignments for the parallel interface
The parallel interface connector pin assignments and a description
of the interface signals are shown in the table below.
Signal Return
Pin
Pin
Signal Direction
Description
1
19
STROBE
IN
The STROBE pulse to read data in. Pulse
width must be more than 0.5
microseconds at the receiving terminal.
2
20
DATA 1
IN
These signals represent Information of
3
21
DATA 2
IN
the 1st to 8th bits of parallel data,
4
22
DATA 3
IN
respectively. Each signal
IS
at HIGH level
5
23
DATA 4
IN
when data is logical 1 and at LOW level
6
24
DATA 5
IN
when it is logical 0.
7
25
DATA 6
IN
a
26
DATA 7
IN
9
27
DATA 8
IN
10
28
ACKNLG
OUT
About a 10-microsecond pulse. LOW
indicates that data has been received
and that the printer is ready to accept
more
data.
This signal is output as a pair
with BUSY.
8-10
Technical Specifications