Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL - Manual (Page 300)

The Objects
Chapter 10
10-35
IMPORTANT: The Numeric Keypad scratchpad occupies the top three
lines of the screen. Keep this in mind before you place any objects on these
lines.
To provide feedback to the operator, the Numeric Keypad-Enable button
can be configured with two states, 0 and 1. If you assign text and attributes
to state 0 only, the border on the button will highlight when you press the
button; the button itself will remained unchanged. If you assign different
attributes and text to states 0 and 1, then the button will immediately
change to state 1 when you press the button.
Configure the Enter key with a handshake so the PLC controller can
acknowledge that a value has been received from the terminal. Define two
PLC addresses: the Enter Key Control address and the Enter Key
Handshake address. When the operator presses the Enter key to send the
value to the PLC controller, the terminal sets the Enter Key Control
address to 1 (after a 400 msec. delay). Put a line in your PLC program to
turn on the bit at the Enter Key Handshake address, to inform the terminal
that the handshake has been received. When the terminal sees this bit on, it
turns off the Enter Key Control bit.
If the terminal does not receive acknowledgement (transition from 0 to 1)
within 5 seconds, (or the Enter Key Handshake is unassigned), it displays
an error message in the Fault Window and resets the Enter bit. If the Enter
Key Handshake is unassigned, the Enter bit will remain set for the duration
of the button hold time or for as long as the button is pressed, whichever is
longer.
IMPORTANT: All function keys are disabled while the terminal is
waiting for handshake acknowledgement.
Decimal Point Format
To allow an operator to enter numbers with decimal points, choose Format
from the Object menu. The menu item Decimal Point will be highlighted.
Press Enter and choose from one of the following:
Disabled specifies no values with decimal points can be entered through
the Numeric Keypad
Fixed Position specifies a set number of digits to be displayed after the
decimal point in the window. For example, if the setting was for three
digits after the decimal, an operator’s entry would appear as follows: