beautypg.com

Rockwell Automation 2711E-ND1 PanelBuilder 1400E Reference Manual User Manual

Page 59

background image

52

Numerics

Publication 2711E-820 – January 1998

!

ATTENTION: A control function should require
operator confirmation. Do not use this object on its
own to initiate a control function. Also, a retained
value could be used when the terminal is powered back
on, which could result in a control function starting
without the operator’s knowledge.

Configuring the Decrement Value Button

Configure the Decrement Value Button according to this table:

Field

Meaning

Name

Assign a name, up to 15 characters, to document the object for
printed reports. This increases the application’s size by 1 byte
per character.

Button Type

Specify Decrement Value Button.

Function Key
(Keypad only)

Specify which function key the operator must press to activate
this button.

Auto-Repeat Rate
(per second)

Specify a number between 0 and 20. When the operator holds
down the Decrement Value Button, the terminal begins
decreasing the value at the Button Control by the “Amount per
Decrement” value at the rate you specify.

A value of 0 disables auto-repeat. When the button is pushed
and held, the value at the Button Control is decreased once by
the amount specified in the Amount per Decrement field. The
button must be released and pushed again for the next
decrement.

Auto-Repeat Start
Delay

Specify the time, between 200 milliseconds and 2.5 seconds,
that the operator must hold down the Decrement Value Button
before the auto-repeat function starts.

Amount per Decrement

Enter an integer or floating-point value between 0.0000000001
and 2,147,483,647. Floating-point values are accurate to 10
significant digits. The value at the control will decrease by this
amount each time the operator presses the button or at each
auto-repeat.

Minimum Value

Define a minimum value below which the Decrement Value
Button will stop decrementing the value. If the value is already
at or below the minimum you define here, and the Decrement
Value Button is pressed, the value will not change. Instead, an
error message appears. Enter a value between –2,147,483,648
and 2,147,483,647. Floating-point values are accurate to 10
significant digits.

Show Numeric Display

Check this field if you want the button’s value to be displayed. If
you choose this, it will be a Decrement Value Button with
Display.

Number of Digits

If you choose to show the numeric display, you can specify the
number of digits that will appear. Choose from 1 to 16. Keep in
mind that a minus sign uses one digit.