User's Manual

Tally Dascom 1225

9 Interfaces

Parallel Interface

Parallel Interface Pin Assignment

Pin Signal Name Signal Transmission

1 STROBE¯¯¯¯¯¯ Printer I Computer

2~9 DATA Printer I Computer

10 ACK¯¯¯ Printer J Computer

11 BUSY Printer J Computer

12 PE Printer J Computer

13 SELECT Printer J Computer

14 AFXT¯¯¯¯ Printer I Computer

15 Unused Unused

16 GND Printer Q Computer

17 F-GND Printer Q Computer

18 +5V Printer J Computer

19~30 GND Printer Q Computer

31 INIT¯¯¯¯ Printer I Computer

32 FAULT¯¯¯¯¯ Printer J Computer

33 GND Printer Q Computer

34 Unused Unused

35 FUSE Printer J Computer

36 SLCTIN¯¯¯¯¯¯ Printer I Computer

Parallel Interface Connector Diagram

Note: Any external devices connected to the parallel port should not draw current exceeding 200 mA from pin

18; otherwise it may affect the printer operation.

USB Interface

The USB interface conforms to the Universal Serial Bus 2.0 Specifications. It supports the Full Speed mode at

12 Mbps. It uses the “B” type USB connector.