Printronix P6000L, User'S Reference Manual

Page: 162 / 234

Interfaces 7-4
Paper Instruction (PI) - Optional EVFU control signal from the host with the same timing as
the data lines. Sensing the PI line is controlled by printer configuration.
NOTE: The PI Line must be disabled (configuration option selected from the front
panel) if the host computer does not drive or control the PI Line. If the line is not conĆ
trolled by the host and sensing is enabled, rapid paper slewing will occur.
Table 7-2. Centronics Interface Connector Pin Assignments
INPUT SIGNALS OUTPUT SIGNALS
SIGNAL PIN SIGNAL PIN
Data Line 1
Data Line 2
Data Line 3
Data Line 4
Data Line 5
Data Line 6
Data Line 7
Data Line 8
Paper Instr.
Data Strobe
Return
Return
Return
Return
Return
Return
Return
Return
Return
Return
ACKNLG
SLCT/IONL
+5 Volts
Busy
Chassis
Not Used
Return
Return
PE
(Test Only)
Ground
2
20
3
21
4
22
5
23
6
24
7
25
8
26
9
27
15
14
1
19
10
28
32,13
12
18
11
29
16,17
33
30,31,
34,35, 36
Parallel Interface Configuration
The printer is configured at the factory for the type of interface used, either parallel or serial.
However, certain user selectable configuration options are available. The following configuraĆ
tion parameters can be verified or changed as necessary to meet specific application requireĆ
ments:
n
Input buffer size
n
Sense of Data Line 8
n
Sense of the Paper Instruction line
n
Data Polarity
n
Printer Error Polarity
n
Fast Busy
These parameters are displayed under the Application Compatibility and Interface CompatiĆ
bility menus selectable from the control panel. This data may be latched on either the leading
or the trailing edge of the Data Strobe signal by selecting the appropriate jumper on the Logic