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Chapter 5
Run Mode
Autorun Message
Background Message
Exiting the Run Mode
5–2
A message can be specified as an autorun message. This message is
triggered immediately after entering run mode. It is always the first message
in the queue, regardless of the state of the parallel port data lines. Use this
feature as a method of displaying an initial message upon powerup.
An autorun message is also useful when using the DL20 for demonstrations
or as an information display. Any number of messages may be displayed
automatically on powerup by chaining the autorun message to them. These
messages are displayed on powerup, whether the DL20 is hooked up to a
controller or not. Remember, do not make a closed loop of chained messages
(i.e., 1 chained to 2 chained to 3 chained to 1). If you want the chain to
repeat continuously, make the last message in the chain an auto repeat
message.
Chapter 8 describes how to set or disable the autorun message.
The background message is displayed when the message stack is empty. Use
the background message to display a fixed message when the DL20 is not
showing anything pertinent to the operation of the application. For example,
you can have the DL20 show the time of day when no other messages are
displayed. Use the Set Up Master special function (Chapter 8), to enter a
background message number.
To exit run mode, you must press [Esc] three times. The DL20 displays the
following prompt when the run mode is terminated:
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