Rockwell Automation FactoryTalk View Machine Edition Users Guide - Manual (Page 442)

F ACTORY T ALK V IEW M ACHINE E DITION U SER ’ S G UIDE
21-50
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You can use Enter key handshaking to hold the value of the tag at the programmable
controller or device for a specific period of time, to ensure the value is read before the
control list selector overwrites the value with a new value.
Enter key handshaking only works if the Write on enter check box is selected (in the
General tab).
For more information about using Enter key handshaking, see page 21-12.
To set up a control list selector
1. Double-click the control list selector.
2. In the object’s Properties dialog box, fill in the options on each tab:
 In the General tab, specify what the selector looks like at run time, its number of
states, whether to write out a value when the operator presses the Enter key,
whether the operator can navigate to the selector using the keys on the keyboard or
keypad, and whether the cursor wraps from the bottom of the list back to the top.
 In the States tab, set up the value and caption for each state. The value defines the
control list selector’s action, by changing the Value connection to the value you
specify when the selected state is in effect. For tips about setting up states, see
page 21-3.