Rockwell Automation FactoryTalk View Site Edition Users Guide - Manual (Page 486)

F ACTORY T ALK V IEW S ITE E DITION U SER ’ S G UIDE
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When the control list selector is in its last state and the operator presses the key, the
control list selector returns to its first state.
Creating piloted control list selectors
Piloted control list selectors let an operator (or a remote device) scroll through and select
from a list of states for a process. A highlight in the list indicates the current state.
Piloted control list features
Piloted control list selectors have features that control list selectors do not:
 States can be selected by an operator, by a remote network device, or by both an
operator and a network device.
Control list selectors can be controlled by the operator or a network device, but not
both.
 Individual states can be turned off, to prevent them from being selected.
You cannot turn states off in a control list selector.
 The state values of all the items that are visible in the list can be written to the Visible
States tag when the list scrolls. The Visible States tag must be a data server tag that
supports arrays. You cannot use an HMI tag.
Control list selectors have no Visible States tag.
 The state value of the item at the top of the list can be written to the Top Position tag
when the list scrolls.
Control list selectors have no Top Position tag.
Selecting states in a piloted control list selector
A piloted control list selector can show several states at the same time, but only one state
can be selected at a time.
You can set up a piloted control list selector to be operator controlled or remote controlled,
by assigning tags or expressions in the Connections tab.
You can also set up individual states to be operator controlled, remote controlled, operator
and remote controlled, or none of those. If none is selected, the state is turned off and
cannot be selected.
If the piloted control list selector is set up to be operator controlled, and the operator
selects a remote controlled state, or one that is turned off, a hollow cursor is shown, as
shown on the right in the following illustration.