User manual

Overview of Applications and Functions

33003962 11/2011

Dual Labelled Keys on XBT R and XBT RT Terminals

XBT R and XBT RT terminals provide dual labelled keys.

For XBT R terminals this means that keys F1 to F12 are function as well as numeric

keys, i.e. they can act as function keys as well as service keys.

They operate as follows:

z If the user is not modifying a value, the keys act as function keys.

z If the user is modifying the value of a field, the keys automatically act as service

keys for edition mode.

NOTE: It is impossible to enter a value if a function key has been pressed, in the

same way that it is impossible to leave edition mode if the value of a field is being

modified.

For XBT RT terminals operated in touch variant, this means that keys F1 to F4 have

different functions, depending on the selected terminal mode.

z In edition mode, keys F1 to F4 act as arrow keys.

z In normal mode, keys F1 to F4 act as static function keys.

static function keys

z access a panel

z execute an impulse command

z execute a toggle command

z modify a value

only for XBT RT: dynamic function keys having panel-dependant functions

z access a panel

z execute an impulse command

z execute a toggle command

z set / reset bit

Key Key Function