Rockwell Automation 2706-LV2P_LV2R_LV4P_LV4R DL40 PLUS USER MANUAL - Manual (Page 118)

Remote I/O Communications 8–26
Publication 2706-6.1
In Message List run mode you can:
•
Trigger a single message through a PLC via Remote I/O port
•
Create a list of messages that are continuously displayed
•
Place messages on the Historical Events Stack
•
Send a message to the slave address selected as a message
attribute
•
Insert ASCII data in a message
•
Return ASCII input data to a PLC
•
Return the message number of the displayed message to a PLC
•
Send real-time clock or date data to a PLC
Creating a List of Continuously Displayed Messages
The list is created by adding message numbers to the list while the
DL40 Plus is in Run mode. See Chapter 6, Serial Port
Communications, for details on adding/deleting messages through
the RS-232/RS-485 port or the Keyboard port.
•
Messages are displayed in the order they are put on the list.
•
Messages can be added or deleted from the list while the list is
running.
•
Unlike the Message/Variable/Slave run mode, you cannot send
variables to be included in a message.
•
Messages are added to the end of the list. If a message is deleted
and re-added to the list, it is re-added to the end of the list.
•
Special messages must be triggered only as priority messages in
the Message List mode.
•
You can send a priority message number via the Remote I/O,
RS-485, RS-232, or Keyboard port which is queued as in the
Message/Variable/Slave run mode. When the current message has
run, all priority messages in the queue will run. Then, the DL40
Plus resumes running the Message List.
Important: The Message List is lost if you exit Run mode. Reset
the DL40 Plus or cycle power. You must create a new list when you
re-enter Run mode.
Placing 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 is put on the stack once each time the message is
displayed or redisplayed.
Message List Run Mode