Enter key handshake operation – Rockwell Automation 2711E-ND1 Reference Manual PanelBuilder 1400e User Manual
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95
Numerics
Publication 2711E-6.15 – November 1998
If the setting was for 15 digits after the decimal, an operator’s
entry would appear as follows:
Digits Entered
Number Displayed
Keypad Numeric Input Value
(to PLC)
0000000000000015
0.000000000000015
15
БББББББ
БББББББ
БББББББ
0100000000000015
БББББББ
БББББББ
БББББББ
0.100000000000015
ББББББББ
ББББББББ
ББББББББ
ERROR
(100000000000015)
•
Decimal Key Controlled allows the operator to enter the number
and decimal point. The terminal notes the position of the decimal
point and sets the Decimal Point Position control to that value.
For the Numeric Input Cursor Point object, use the Numeric
Decimal Point Position control (not the Decimal Point Position
control).
This control should use analog tags.
To send a decimal point value to the PLC, define a (Numeric)
Decimal Point Position control. The value stored at this control
determines the number of digits to the right of the decimal point.
The relationship between the number and decimal point is
implied; the number sent to the PLC does not contain a decimal
point.
Digits Entered
Number Displayed
Keypad Numeric
Input
(Numeric)
Decimal Point
Position Value
БББББ
БББББ
123
ББББББ
ББББББ
123
ББББББ
ББББББ
123
ББББББ
ББББББ
0
БББББ
БББББ
1.23
ББББББ
ББББББ
1.23
ББББББ
ББББББ
123
ББББББ
ББББББ
2
БББББ
БББББ
.12345
ББББББ
ББББББ
.12345
ББББББ
ББББББ
12345
ББББББ
ББББББ
5
You can assign controls to provide handshaking between the PLC
and terminal for the Numeric Keypad Enable Button, Numeric Input
Cursor Point, and Numeric Entry Keypad objects. To use this option,
assign the Enter Key Control and the Enter Key Handshake.
When the operator presses the Enter key to send the value to the
PLC, the terminal sets the Enter Key Control to 1 (after the delay
specified in the Enter Key Control Delay field in the Timing
Parameters tab of the Configure Terminal Setup dialog box). To
inform the terminal that the handshake has been received put a rung
in your PLC program to cause a 0 to non-0 transition in the value of
the Enter Key Handshake control. When the terminal sees this non-0
value, it resets the Enter Key Control value.
Enter Key Handshake
Operation