About retentive objects, 10ć94 – Rockwell Automation 2711 PANELBUILDER SOFTWARE USER MANUAL User Manual

Page 359

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The Objects

Chapter 10

10-94

Page Down scrolls the list down by the number of Visible States

defined. If the cursor is at the bottom-most or last position in the list,
pressing this button has no effect.

Home positions the cursor at the top-most or first position in the list.

End positions the cursor at the bottom-most or last position of the list.

Enter—If the Enter Key Control Address is defined, the terminal sets

this address 400ms after the Enter button is pressed. If the Enter Key
Handshake address is defined, the terminal resets the Enter Bit when the
Handshake address makes a 0 to 1 transition after the Enter Bit was set.
If the Handshake address does not make a 0 to 1 transition within four
seconds, the terminal informs the user, and automatically resets the
Enter Bit. If the Handshake address is not defined for this object, the
Enter bit is reset when the button hold time elapses.

Retentive Objects are those which retain their value when

power is switched off and on

the terminal is switched from Run mode to Configure mode and back

the operator changes screens

The advantages of Retentive Objects are:

PLC programming instructions are often eliminated

PLC output addresses are often not needed

The following objects are retentive:

Maintained Push Button

Interlocked Push Button

Control List Selector (with and without Enter key)

Increment and Decrement Value Buttons

Set

Value

Button

Set Bit Cursor Point

Numeric Input Cursor Point

Numeric Keypad Entry Button

About Retentive Objects

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