Zebra 01407-000 ユーザーズマニュアル

Interfaces
Parallel Interface (TTP 1020)

P1003643-001

TTP 1020™/TTP 1030™ Technical Manual

03/03/2009

The signaling of _Fault and PE can be switched on/off with parameter p5.

The Compatibility, Nibble and Byte Modes use the standard hardware available in the original 
Centronics parallel port, while EPP & ECP Modes require additional hardware. Hardware that 
can run at higher speeds while still being downwards compatible with the standard parallel 
port.

Compatibility Mode, or "Centronics Mode" as it is commonly known, can only send data in the 
forward direction.

To output a byte to a printer using Compatibility Mode, the software must:

Write the byte to the Data Port.

Check to see if the printer is busy. If the printer is busy, it will not accept any data. Thus 
any written data will be lost.

Take the Strobe (Pin 1) low. This tells the printer that the correct data is present on the data 
lines (pins 2–9).

Put the strobe high again after waiting approximately 5 microseconds after putting the 
strobe low (step 3).

This limits the speed at which the port can run to about 50 Kbytes per second. 

In order to receive data, you must change the mode to either Nibble or Byte Mode. 

1

→

1

Strobe

2–9

→

2–9

Data 0-7

10

←

10

Ack

11

←

11

Busy

12

←

12

Paper Out/ End

13

←

13

Select

14

→

14

Auto Linefeed

15

←

32

Error/ _Fault

16

→

31

Initialize

17

→

36

Select Printer

18–25

GND

19–30

Ground