Rockwell Automation 2706 DL40 HARDWARE USER MANUAL - Manual (Page 79)

Chapter 8
Serial Communications
8 – 2
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Triggering messages in any run mode.
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Inputting variable data in the Message Variable/Slave Run Mode and
Message/Variable Run Mode.
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Dynamically adding or deleting messages to or from the list in Message
List Run Mode.
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Test displaying messages.
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Setting DL40 using computer’s real time clock.
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Returning [CTRL][X] ( ASCII Input) data.
Note: ASCII Input Data can only be returned via the RS-485 Port if the
message was triggered via the RS-485 Port.
!
ATTENTION: Do not attempt to trigger messages and return
ASCII Input Data simultaneously. Doing so will cause both
transmissions to become corrupted.
Note: If more than one DL40 is on the RS-485 link and
— if a transmission is in progress to a DL40 and
— if power to a second DL40 is cycled ( OFF–ON ), the transmission to
the DL40 will time out because the DL40 which is powering up
temporarily interrupts the link (this does not occur with displays
having a firmware revision number of 2.02 or greater).
Uses of the Keyboard Port
Use the Keyboard Port to control a variety of DL40 functions.
Keystroke Function
[CTRL][T] Triggering messages
[CTRL][V] Inputting variables to fill [CTRL][V] callouts
[CTRL][A] Inputting variables to fill [CTRL][W] callouts
[CTRL][E] Onboard editing
[CTRL][P] Printer user application file
[CTRL][S] Historical Events Stack (viewing or printing)
[CTRL][B] Backup (tape or memory module)
[CTRL][C] Clock setting
[CTRL][D] Debug Mode
You can also use the Keyboard Port for:
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Inputting ASCII Input [CTRL][X] Data.
Note: ASCII Input Data can only be returned via the RS-485 Port if the
message was triggered via the RS-485 Port or via the Remote I/O Port if
the message was triggered via the Remote I/O Port.