Operation
M P -3 48 9 E m ul at io n
10
MP-3489 Emulation
Hardware Handshake:
The MP-3489 uses the DTR line for paper end and buffer full as hardware handshake.
Software handshake is supported.
When the printer is ready to receive, it will change DTR to LOW and transmit XON to the
host computer.
When the character buffer is filled except for 32 characters, the interface will change DTR
to HIGH and transmit XOFF to the host computer.
When the printer mechanism cassette is removed to exchange the paper roll, the interface
will set DTR to HIGH and maintain this status until the cassette is put back in its place.
Commando
Description
Comment
CR (0D hex)
Carriage Return
Line Feed
LF (0A hex)
Line Feed
Line Feed
SI (0F hex)
Shift Off
Wide Print Off
SO (0E hex)
Shift In
Wide Print On
CAN (18 hex)
Cancel
Erase Buffer
ESC A
Print Standard
ESC D
Print Cyrillic
ESC C
Reset
Character Sets:
The
M P -3 48 9
works with 40 and 20 characters / line.
The virtual width of the mechanisms is set to 560 pixels, 70 bytes:
Standard Print :
40 cpl = 14x22 font standard
Wide Format Print :
20 cpl = 14x22 font standard double width
Cyrillic character set only requires 20h – 7Fh
Standard Print :
40 Z/Z = 14x22 font standard
Wide Format Print :
20 Z/Z = 14x22 font standard double width
G e B E E +F G m b H • w w w . o e m - p r i n te r . c o m • G e B E D o c . N r . S M A N - E - 487 - V 1. 1 • G P T - 444 3 • P ag e 10/ 12
Co nn ect ion No .
GP T-4 44 3
Signal
Directio n
Comment
Con nec tion No.
at MP -34 89
Signal
MP-3489
2
3
TXD
RXD
OUT
IN
printer data output
printer data input
3
5
TXD
RXD
5
6
GND
DTR
---
OUT
signal ground
PE / handshak e printer output
13
7
GND
RTS
Connecting the Serial Interface RS232 (V.24) to the SUB-D 9 Pin Socket
