csmstr - Omega Engineering

CONFIGURING THE MONOCHROME VIRTUAL HMI
CHANGING THE LANGUAGE
CHANGING THE LANGUAGE
To configure a key to change the language displayed by the virtual HMI, select User Defined
mode and enter SetLanguage(n) as the On Pressed property, where n is a number between 1
and 8, according to the language to be displayed. The display page will be redrawn in the
selected language, with any text for which translations have been entered—including fixed
text, tag labels and tag formatting information—adjusted as appropriate. Pages that are
subsequently displayed will also be drawn in the selected language.
ADVANCED TOPICS
The following sections deal with more advanced issues relating to keyboard actions.
ACTION PROCESSING
When a key is pressed or released, Crimson goes through a defined sequence when deciding
what to do with the event. If any stage results in some action being performed, the sequence is
stopped, and the later stages do not get a chance to process the key.
The sequence is as follows…
1. If a display primitive is selected for user interaction, it is given a chance to
process the key. Active data entry fields will consume the Raise, Lower, Exit
and Enter keys, plus whatever other keys are appropriate to the operation being
performed. For example, integer entry fields will also consume the numeric keys.
2. If a display primitive is selected for user interaction and the Next or Prev keys
are pressed, Crimson will attempt to find the next or previous display primitive
that also desires user interaction. If any such field exists, the key will be
consumed, and that primitive will be activated.
3. If a local action is defined, the action is performed and the key consumed.
4. If a global action is defined, the action is performed and the key consumed.
5. If the key remains unconsumed, the default actions are implemented…
EVENT
Next Key Pressed
Prev Key Pressed
Exit Key Pressed
Menu Key Pressed
Mute Key Pressed
ACTION
Displays the page’s Next Page, if one is defined.
Displays the page’s Previous Page, if one is defined.
Displays the page’s Parent Page, if one is defined.
Displays the fist page in the page list.
Silences the Master’s internal alarm sounder.
As mentioned above, configuring a key for any global or local action—even one that does
nothing, such as Block Default Action—prevents this sequence from proceeding. It should be
obvious, then, why such an action is useful, even though at first sight it serves no purpose!
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