Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 478)

F ACTORY T ALK V IEW S ITE E DITION U SER ’ S G UIDE
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Setting up states for a display list selector
To set up the states for a display list selector, decide how many graphic displays are to be
in the list, and then, in the States tab, add that number of states to the display list selector.
For each state, specify a display and its associated parameter file or parameter list. Also
specify a caption that identifies the display. This is what the operator will see in the list at
run time.
Providing operator instructions in local message displays
Use local message displays to provide an operator with information about a process, or
about what to do next, at run time.
For example, you might provide messages that describe the status of a device whose
condition cannot be represented graphically with accuracy, or to tell the operator how to
deal with a specific situation when it arises.
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.