Printronix P5000 Manuale Utente
122
Chapter
5
Centronics Parallel Interface
Centronics Parallel Interface
The Centronics interface enables the printer to operate with controllers
designed for buffered Centronics printers. The length of the data cable from
the host computer to the printer must not exceed 15 feet (5 meters).
designed for buffered Centronics printers. The length of the data cable from
the host computer to the printer must not exceed 15 feet (5 meters).
Centronics Interface Signals
The Centronics interface signals between the host computer and the printer
are defined as follows:
are defined as follows:
Data Lines 1 through 8. Provide eight standard or inverted levels from the
host that specify character data, plot data, or a control code. Data Line 8
allows access to the extended ASCII character set. You may enable or
disable this line via the Data Bit 8 parameter on the Centronics submenu
(page 107).
host that specify character data, plot data, or a control code. Data Line 8
allows access to the extended ASCII character set. You may enable or
disable this line via the Data Bit 8 parameter on the Centronics submenu
(page 107).
Data Strobe. Carries a low true, 100 ns minimum pulse from the host that
clocks data into the printer.
clocks data into the printer.
Table 12. Centronics Interface Connector Pin Assignments
Input Signals
Output Signals
Miscellaneous
Signal
Pin
Signal
Pin
Signal
Pin
DATA LINE 1
Return
2
20
20
ACKNOWLEDGE
Return
10
28
28
CHASSIS GROUND
17
DATA LINE 2
Return
3
21
21
ONLINE
Return
13
28
28
GROUND
30
DATA LINE 3
Return
4
22
22
FAULT
Return
32
29
29
Spares
14
DATA LINE 4
Return
5
23
23
PAPER EMPTY
Return
12
28
28
No Connection
34,35,
36
36
DATA LINE 5
Return
6
24
24
BUSY
Return
11
29
29
+5 Volts
18
DATA LINE 6
Return
7
25
25
DATA LINE 7
Return
8
26
26
DATA LINE 8
Return
9
27
27
DATA STROBE
Return
1
19
19
PAPER INSTRUCTION
Return
15
29
29
PRIME
Return
31
30
30