Rockwell Automation 2706-DXX Dataliner Message Display DL5 Series - Manual (Page 79)

2706-UM001A-US-P
Using the Variable Data Feature 9-7
Suggestions on Using the
Variable Data Feature Message attribute settings are important to the proper functioning of the
variable data feature. Refer to Chapter 3 for review of message attributes.
The following message attribute settings are recommended.
Line Selection recommendations:
•
Do not use the scroll mode when variables are within a message. The
message should appear as one or two lines.
•
Limit each message to one screen (16 characters if a one line message,
32 characters if a two line message).
Wait Time recommendation:
•
Set the wait time of a variable message to zero to allow for the fastest
update of the variable.
Auto Clear recommendation:
•
Set auto clear to NO.
Auto Repeat recommendation:
•
Do not use the auto repeat display option for messages that contain
variable data. If the auto repeat display option is selected, the DL5 will
resample the data lines for variable data each time the specified message
wait time has expired.
Your controller cannot send variable data for a new message trigger until
the auto repeat message is halted. You can halt the display of an auto repeat
message by triggering a programmed blank message number.
Note: A blank message is one which has been created but has no
displayable characters. Its attributes could be Wait Time Zero, Auto Clear
No, and Auto Repeat No.
For example, the following describes a triggering sequence that occurs
using an auto repeat message with four variable digits. The message being
triggered is:
This message has a wait time of zero, and no auto clear.
1. First, the controller sends the variable data “1050”.
2. Next, the controller sends the trigger for the message.
AA2)AA%$'