Communication Interface; Serial Interface - TSC TDP-643R PLUS Service Manual

TDP-643R PLUS BAR CODE PRINTER
SERVICE MANUAL

1.3 Communication Interface

The TDP-643R PLUS bar code printer is designed to work with any kind of
computer device that is capable of generating ASCII output data. Depending on
the model, the printer can be connected to a computer via its standard RS-232 or
Centronics interface.

1.3.1 Serial Interface

The serial port of TDP-643R PLUS bar code printer is factory set to 9600 baud,
no parity, 8 data bits and one stop bit using Xon/Xoff protocol as well as
DSR/DTR handshaking.
When using an MS-DOS computer, you may want to include the following two
lines in your AUTOEXEC.BAT file in order for the computer to automatically
execute the commands when turned on:
MODE COM1: 96,N,8,1
MODE LPT1:=COM1;
The commands above will configure and direct the serial output to COM1 serial
port. If you are to use different ports, make appropriate substitutions.
The following table shows the pin assignments of the TDP-643R PLUS RS-232
serial interface. Cable: DB9 Male to DB9 Female (PC) straight pin to pin
connection or DB9 male to DB25 Female.
25
pin
3
2
20
7
6
4
5
9 Host
pin function
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
- 5 -
9 Printer
pin Function
2 TxD
3 RxD
4 N/C
5 GND
6 RDY
7 N/C
8 RDY