Rockwell Automation 2706 DL40 HARDWARE USER MANUAL - Manual (Page 39)

Chapter 4
The Run Mode – Parallel Port
4 – 4
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Messages can be added to or deleted from the list while the list is running.
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Messages are always added to the end of the list. If a message is deleted
and re-added to the list, it will be re-added to the end of the list.
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You can send a Priority Message Number which is queued as in the
Message/Variable/ Slave Run Mode. When the message that is currently
displayed finishes running, all Priority Messages in the queue will be run.
After queued messages complete running, the DL40 resumes running the
Message List.
Note: Unlike the Message/Variable/Slave Run Mode, you cannot send
variables to be included in a message.
Put Messages on the Historical Events Stack
Same as Message/Variable/Slave Run Mode but includes entries for adding
or deleting messages.
Note: If the message’s Historical Events Stack attribute is set, message data
will be put on the stack once for each time the message is displayed or
redisplayed.
Send Message to the Slave Address Selected as a Message Attribute
See Chapter 7 for more information.
Note: To send any message to a slave, Port Use of the RS-485 Port must be
set to DL Slaves . See Chapter 6 for more information.
Note: If the message’s Print attribute is set, the message will be printed once
for each time it is displayed or redisplayed.