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Rockwell Automation 2706 DL20 SERIES G USER MANUAL User Manual

Page 108

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Chapter 8
Special Functions

8–20

Use the Set Up Master function to:

Select autorun message

Select background message

Set master address

Enable or disable dynamic chaining

Set relay to turn on when batteries are low

Output all prompts and messages to slave displays

Display error messages

Selecting an Autorun Message

Autorun causes the run mode to be entered on powerup if the DL20 was shut
off in the run mode or if a message EPROM is installed. An autorun
message can automatically be triggered when the DL20 powers up. The
autorun message is the first message displayed after self tests regardless of
the message queue or triggers. When setting up the DL20, you will see this
prompt:

AUTORUN MSG: 0

The current autorun message number is displayed. You can enter a valid
message number between 1 and 1022 and press [Return]. Entering 0 disables
the autorun message.

Note: An autorun message can be chained to other messages. The chain is
repeated if the last message in the chain has auto repeat selected.

Selecting a Background Message

The background message is displayed when the message trigger queue is
empty. Background messages can be the time of day or any other message.
The prompt for the background message looks like this:

BACKGROUND MSG: 0

The current background message number is displayed. You can enter a valid
message number between 1 and 1022 and press [Return]. Entering 0 disables
the background message. A background message can be chained to other
messages. The messages automatically repeat until a message is triggered.

Important: The background message or the last message in a background
message chain SHOULD NOT have auto repeat enabled. Enabling auto
repeat could cause improper operation.