8.19
Date Code 20090730 Instruction Manual SEL-734 Meter
Logic
Rotating Display
The following factory settings examples use optoisolated inputs IN101 and
IN102 in the display points settings. Remote bits (RB01 through RB16) and
any other combination of Meter Word bits in a SEL
OGIC control equation
setting can also be used in display point setting DPnn.
Displaying Values on
the Rotating Default
Display
Each display point setting contains one or more of the following: Analog
Quantity, Meter Word bit, user-defined text, and/or user-defined numerical
formatting. Meter Word bits and Analog Quantities are displayed as default
form or as user-defined text.
Display point setting strings have a maximum length of 64 characters. Quotes
are optional and are required only if the given string contains commas or
spaces. If the entire string is empty, then that display point is hidden.
Name—Displays the given entry exactly as seen on the setting line (name,
value, and units). Name is any valid analog quantity or a Meter Word bit. See
Section 9: Settings and Appendix H: Analog Quantities for valid display point
names.
Name, “Alias”—Display given entry, replacing Name with the given Alias
string.
Name, “Alias,” “Set String,” “Clear String”—This format requires that Name
be a Meter Word bit. Display the given entry as Alias. If the Meter Word bit
state is asserted (logical 1), display the Set String as the value. If the Meter
Word bit state is deasserted (logical 0), display the Clear String as the value.
Alias, Set String, or Clear String can be empty. If Alias is empty, then only the
Set String or Clear String will be displayed. If either Set String or Clear String
are empty, then the item will not be visible when the bit matches that state. If
an empty line is required in this case (instead of hiding the line), then empty
curly braces ({}) should be used for the Set String or Clear String. Alias and
Set String/Clear String are all displayed on the same line of the front panel
display.
Name, “User text {numerical formatting}”—Display given entry, replacing
Name with User text and displaying the value of Name in the user-defined
format {width.dec,scale}, {numerical formatting}. The value is scaled by
“scale,” formatted with a total digit width “width” and “dec” decimal places as
defined in {numerical formatting} ({width.dec,scale}). Name can be either an
analog quantity or a Meter Word bit. The width value should include the
decimal point and sign character, if applicable. The “scale” is 1 if omitted. If
the numeric value is smaller than the field size requested, the field is padded
with spaces to the left of the number. If the numeric value will not fit in the
Table 8.8 Display Point Test Definitions
Term Definition
Name Any valid Analog Quantity or Meter Word bit you wish to display
Alias An alternate name (string) displayed, replacing the Analog Quantity or
Meter Word bit assigned in Name
Set String A user-defined string displayed when the Meter Word bit assigned in
Name asserts (logical 1)
Clear String A user-defined string displayed when the Meter Word bit assigned in
Name deasserts (logical 0)
User text
{numerical
formatting}
A user-defined text string (Alias) replacing the {numerical formatting}
with {width.dec,scale} where the value of Name is scaled by “scale”,
formatted with total width “width” and “dec” decimal places.
Maximum width and dec are 20 digits.
Courtesy of NationalSwitchgear.com
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