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Creating graphic objects Chapter 17
Rockwell Automation Publication VIEWSE-UM006K-EN-E
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Setting up local messages
These are the tasks involved in setting up local messages:
1. In the Local Messages editor, create a local message file that contains
the messages to display, and the trigger values for these message.
2. In a graphic display, create a local message display that presents a
message when its Value tag or expression matches a trigger value in
the specified local message file.
You can use multiple local message display objects in a display, and link
each object to a different local message file. You can also use the same local
message file for multiple local message displays.
For more information about local messages, see the FactoryTalk View Site
Edition Help.
Trigger values cannot be zero
The trigger value for a local message can be any non-zero integer value
(positive or negative). Trigger values do not need to be contiguous, but they
must be unique for each message. For example, you could use trigger values
of 1, 2, and 3, or of 10, 20, and 30.
Because trigger values cannot be 0, if you use a digital HMI tag, you can
only use the value 1 to trigger a message.
If you use an analog tag or an expression, you can use any non-zero integer
or floating point value to trigger a message. Floating point values are
rounded to the nearest integer.
What is shown at run time
In the local message file, each message is associated with a trigger value.
When the local message display’s Value tag or expression matches the
trigger value, the message associated with the trigger is shown.
At run time, a local message display shows one message at a time.
Special cases are handled in the following ways:
If the Value tag or expression is unassigned, the local message display
is filled with question marks ( ? ).
The Value tag or expression is rounded to the nearest integer. If the
value does not match any of the trigger values in the message file, the
local message display is filled with question marks ( ? ).
If the message is too long to fit in the list, the last shown character is
replaced with an asterisk ( * ).