Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 143)

Installation and Wiring 9–14
Publication 2706-6.1
The RS-232 Port can be configured for the following
communications:
•
Uploading or downloading applications from a personal computer
•
Open Protocol (ASCII Triggering)
•
Printing
•
DL Slave
Catalog Numbers for Allen–Bradley cables are listed in Appendix B.
If you want to construct your own cable, use the appropriate diagram
in Appendix B.
You can use the DL40 Plus to trigger a remote alarm or warning light
under specific conditions. Attach this remote alarm or light to the
Relay connectors on the back of the DL40 Plus.
!
ATTENTION: Use the Alarm Relay for annunciator
purposes only. Do not use it for control circuits.
You can attach an IBM–AT, –XT or compatible keyboard to the
8-Pin DIN connector on the back of the DL40 Plus. The keyboard
can be used to trigger messages, as well as access the following
functions: Printer, Historical Events Stack, Clock Set and Debug. In
addition, the keyboard is used to send ASCII data back to the PLC.
Note: The keyboard DIP switch setting must be set to the same
setting as the keyboard type (AT or XT) being used.
Keyboard Connector
PIN SIGNAL
1 Keyboard Clock
2 Keyboard Data
4 Ground
5 +5 Volts
5
2
4
1
RS-232 Port
Alarm Relay
Keyboard Port