Rockwell Automation 2711E-ND1 Reference Manual PanelBuilder 1400e - Manual (Page 134)

128 Scrolling Lists
Publication 2711E-6.15 – November 1998
Note: A Cursor List will not have a Retain Last List State value
until its parent screen has been displayed, or if the application has
been newly selected as the current application. If it has no Retain
Last List State value, and the list is under operator control,
PanelView positions the cursor on the Cursor Indicator state value, if
non-skipped. Otherwise, PanelView positions the cursor on the first
non-skipped state. See Configuring Skipped States, later in this
chapter, for more information.
Note: If the PLC controls the list, the PanelView terminal ignores
any Retained Last List State values. In this case, the list position is
determined by the Cursor List control. PanelView then updates the
Cursor Indicator, Top Position, and Visible State controls.
Important: When the operator switches to a new screen, there could
be a slight delay before the Cursor List values are
updated from the PLC.
If you load Application Initial Values in Configure Mode, the Retain
Last List State values will be cleared. However, Application Startup
settings have no effect on Retain Last List State values.
Note: If you choose Yes to Retain Last List States, the application
will be compatible only with PanelView Firmware Version 2 or later.
The application will not be compatible with earlier versions.
The Cursor List Controls
The Cursor List object uses the following controls:
Control Meaning
Cursor Control
from PLC Lets the PLC inform the terminal where to position the cursor in the
Scrolling List. The control contains the value of the state to place the
cursor on. You can assign a tag or expression to this control. The
control, Enable PLC Controlled List, must be on (non-0) for this
control to work.
Note: For the PLC to control the cursor, the value of the Enable
PLC Controlled List must be non-0. Pressing the cursor buttons at
the terminal will generate a Mistake message.
Note: If no state matches the Cursor Control value, or if the value
points to a skipped state, an error state occurs and the arrow cursor
and highlight bar disappear.
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