Datamax Allegro 2 Operator's Manual page 88

Printer Cabling and Interfacing:
When the Printer receives data from any host system, it will not
properly function with an incorrectly wired cable. Proper wiring
diagrams can be found in Appendix E. Table B-1 contains a list of
the signals that if correctly wired to the host system will cause the
Printer to operate properly.
When the Printer is turned on, it will default to pre-determined
interfacing parameters. The default values are in Table B-2.
Table B-2 Printer Default Communication Parameters
Altering the switch positions of Dip Switch S1 on the back of the
Printer will configure the Printer for different applications. Chapter
2, Section 2.4 shows the switch positions and the configurations
supported by each setting.
B-2
Switch Settings and Cable Interfacing
Signal
TX
RX
BUSY
Ground
Jumper
Shield
Table B-1 I/O Port Wiring
Paramete Default Value
r
BAUD
Data Bits
Parity
Stop Bits
Pin
2
3
20
7
4 to 5
1
9600
8
None
1
Allegro2