Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL - Manual (Page 342)

The Objects
Chapter 10
10-77
Table 10.AA
Scratchpad Input and Contents of ASCII Input Address
Scratchpad Input Address
left most character high byte - 1st word
2nd character low byte - 1st word
3rd character high byte - 2nd word
4th character low byte - 2nd word
You can also configure the Enter key with a handshake so the PLC
controller can acknowledge a value received from the terminal. To do this,
you must 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).
Program your PLC controller to turn on the bit at the Enter Key Handshake
address, to inform the terminal that the Enter Key Control Bit has been
received. When the terminal sees this bit on (receives acknowledgement),
it turns off the Enter Key Control bit.
If the PanelView terminal does not receive acknowledgement (transition
from 0 to 1) within 4 seconds, it displays a Minor Fault 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 keypad and touch input is disabled while the Enter
Key Control Bit is set to 1.
Configure these two optional addresses for the Handshake functionality:
Enter Key Control Address specifies the input bit PanelView sets
when the ENTER button is pressed. It is:
an Input address
Data Type: Bit
Number of Bits: 1
Enter Key Handshake Address specifies the bit the PLC controller
sets when it detects the ENTER bit is set:
can be Input or Output (default)
Data Type: Bit
Number of Bits: 1.