SIREC D Display Recorder 7ND4000

Programming
b. The LEFT (�) or RIGHT (�) Arrow Keys
move to a position to enter the desired Equation.
40 positions are available for equation operators,
and the display will scroll to the left or
right to allow entry. Use the UP (↑) or DOWN
(↓) Arrow Keys to select the functions as follows:
• P1 to PC - represent Points
• K1 to KF - represent Constants
• ) is a RIGHT Parenthesis
• + is Add
• - is Subtract
• * is Multiply
• / is Divide
• ^ is Fractional X Y
• ** is Integer (X y )
• Sq is Square Root
• Ln is Natural Logarithm
• Lg is Base Ten Logarithm
• Ex is Exponentiation (e x )
• ( is a LEFT Parenthesis
Algebraic precedence are used to evaluate the
equation. That part of the equation between parenthesis
is calculated first, then the basic rules
are obeyed. When the desired equation is displayed,
press ENTER and the display returns to
the "Set equation" menu item in the Point Setup
Menu.
6. Engineering Units - Up to a five character engineering
units message may be assigned for
Calculated points.
a. Programming Engineering Units - Use the
UP (↑) or DOWN (↓) Arrow Keys to highlight
"Eng units" and press ENTER . The display
reads "units�XXXXX�”.
b. Use the Alphanumeric keypad to enter the
desired Engineering Units message. When it is
displayed, press ENTER; the display returns to
the "Eng units" item in the Point Setup Menu.
7. Alarms - Refer to Paragraph 4.6.14 below for
instructions on programming alarms.
8. Chart Scale - Each point must be assigned to a
Chart Scale.
4-36
a. Programming Chart Scale - Use the UP (↑)
or DOWN (↓) Arrow Keys to highlight “Chart
scale" and press ENTER. The display reads
"chart scl X".
b. Use the UP (↑) or DOWN (↓) Arrow Keys to
select the Chart Scale numeral and press
ENTER. The display returns to the "Chart scale"
menu item in the Point Setup Menu. To leave
the programming menu, press EXIT until the
"COMMAND" prompt is displayed.
J. Reset Control - Reset Control applies only
to Calculated Point Types of the following Point
Ranges:
• Hi Peak
• Lo Peak
• Time Average
• Gated Timer
• Totalize
Reset control does not apply to:
• Moving Average
• Equation
• Hilo Difference
The Reset Control Menu allows programming of an
Event Reset, printing of the reset data, and setting
Auto Reset time intervals. You can choose to have
a totalizer for example, automatically reset to zero
every hour, or have it reset only by means of an
external event (digital input).
1. Programming Parameters - Once a point has
been selected and defined as Calculated, the Calculation
Type Programming menu appears. Select
the calculated point type using the UP (↑) or
DOWN (↓) Arrow Keys to highlight "Hi peak", "Lo
peak", "Time avg", "Gated timer", or "Totalize" and
press ENTER. This will bring up the Calculated
Point Type programming menu.
2. Selecting Reset Control - Use the UP (↑) or
DOWN (↓) Arrow Keys to highlight “Reset control"
in the Calculated Point Type programming Menu
and press ENTER. There are three options:
• Event Reset
• Reset Print
• Auto Reset
3. Event Reset - Event Reset allows Calculated
Points to be reset upon some external event via
the optional digital inputs on the rear panel. When
programming Event Reset, the Event Number is
the digital input number for that external event, 1,
2 or 3. Selecting 0 disables Event reset.
a. Programming Event Reset - Use the UP (↑)
or DOWN (↓) Arrow Keys to highlight "Event reset"
in the Reset Control Setup Menu and press
ENTER. The display will read "event? X".
b. Use the UP (↑) DOWN (↓) Arrow Keys to
select the desired event input number and press
ENTER. The display will return to the "Event reset"
prompt in the Reset Control Setup Menu.
Siemens AG C79000-G7374-C211-01
SIREC D Manual