| Pin Number |
Signal |
Description |
|
1
|
Strobe* |
A low pulse causes the printer to read one byte of data. |
|
2 - 9
|
Data 0 - Data 7 |
Data Lines. Data 0 is the Least Significant Bit (LSB). |
|
10
|
Acknowledge* |
The printer sends a low pulse to indicate that it has accepted a byte
of data and is ready for more. |
|
11
|
Busy |
The printer sends a high logic level to indicate that it cannot receive
data due to data entry, a full buffer, or error status. |
|
12
|
Paper Error |
The printer sends a high logic level to incicate it is out of paper. |
|
13
|
Ready |
The printer sends a high logic level to indicate that it is in an online
condition. |
|
16
|
Ground |
Signal interface ground. |
|
17
|
Chassis Ground |
Chassis Ground. |
|
18
|
+5v |
The printer outputs a +5V high logic level through a 2.2K resistor. |
|
19 - 30
|
Signal Ground |
Signal Ground. |
|
31
|
Reset/Input Clear |
A low pulse sent by the computer resets the printer and clears the
printers input buffer. The printer does not work when this line is
held low. |
|
32
|
Error* |
The printer sends a low logic level to the computer to indicate that
it is in an error state. |
