Allen-Bradley A-B QUALITY DL20 Series User Manual page 149

Overview
Setting Baud Rate
Setting Keyboard Baud Rate
This appendix provides instructions for setting the baud rate on keyboards
(Catalog No. 2706-NK1 or -NK2).
Before the 2706-NK1 or 2706-NK2 keyboards can be connected to the
DL20, the baud rate of the keyboard must match the display baud rate.
Displays are shipped from the factory with a baud rate of 9600. The
keyboard baud rate must be set to 9600 to work with a DL20.
Use the following procedures to change or verify the keyboard baud rate
1. Turn the keyboard over and slide the DIP switch access door open.
Cable
Bottom view
Cat. No. 2706-NK1
Full Travel Keyboard.
2. Set DIP switch to appropriate baud rate.
ON=UP=CLOSED
OFF=DOWN=OPEN
2706-NK1 DIP Switch
BAUD RATE SWITCH SETTINGS
Baud Rate SW1 SW2
300 OFF OFF
1200 OFF OFF
9600 OFF OFF
Note: When programming the DL20, it is possible to change the baud rate
of the serial port. Once this baud rate is changed, the keyboard baud rate
must be changed to match.
Appendix
E
A–B
Access door
Bottom view
ON
1 2 3 4
2706-NK2 DIP Switch
BAUD RATE SWITCH SETTINGS
SW3 SW4 Baud Rate
ON ON 300
OFF ON 1200
OFF OFF 9600
Cable
Cat. No. 2706-NK2
Membrane Keyboard.
ON
1 2
SW1 SW2
ON ON
ON OFF
OFF OFF
E–1