Monarch Instrument DC 2000 - Manual (Page 44)

Page 3-14
Chapter 3 Getting Started
3.8 Programming Points
The points are the input or calculated channels that are assigned to the display or are recorded. In case there is
any incorrect point data stored, clear all points before reassigning them. To do this, get to the Hidden menu (Press
MENU then the upper right-hand button (disk status area)). Select Initialize then press ENTER and then using
the UP and DOWN arrow keys select the Clear Points menu option by once again pressing ENTER. You will then
be asked whether or not you wish to “clear?” the points. Select Yes which will return you to the menu. Press EXIT
twice to return to the Programming menu.
From the Program menu, select Points and press ENTER. You will be given the option to either program points
(Prog point) or program constants. Select Prog(ram) Point and press ENTER. You will be presented with an
alphanumeric keypad and will be prompted for which of the twelve possible points to program. Select 1 and
press ENTER. The Points Program menu will be presented. You can choose to either set up a point “Setup pt”,
copy the data from another point that has already been set up “Copy pt”, or restore the original data you just
removed “Restore Pt”. Select “Setup pt” and press ENTER. You now have a selection of various ways in
which this point can be programmed. These include Linear, Industrial square root “Ind sqrt”, Log linear,
thermocouple “T/C”, RTD, Calculated, Conditional, or External. Program this point as a Linear point by selecting
Linear from the menu and pressing ENTER. You now have to choose the full scale input range for this point. Note
that when this point is programmed as a milliamp input, it is necessary to set the switch for that channel on the rear
panel to connect in the terminating resistor that allows the current to be measured as a voltage input. Read chapter
5.6 for more detail. Program this point for one volt full scale input by using the UP and DOWN arrow keys to select
“1.25V” and pressing ENTER. You will now be presented with a menu that enables programming of various options
pertaining to this particular point in the one volt full scale mode. These include the Point tag, Input scale, Output
scale, Engineering units, Alarms and Chart scale. Refer to the detailed chapters for those items not covered below.
3.8.1 Point tag
This is an alphanumeric indication of what the point represents and is generally located or displayed at the
bottom of the bar graphs or on the chart itself. This information is also stored to disk to uniquely identify the
point. To add a point tag, select this option and press ENTER. You will be presented with the first page of
an alphanumeric keypad. There are four pages available which includes all the upper and lower case
alphabet characters, numerics and various signs and symbols for programming engineering units. Up to ten
characters for the point tag may be entered (only six will be displayed on the screen). To access characters
on another page, simply press the PAGE button. The space is ‘SPC”, the LEFT and RIGHT arrows move
the cursor to the position you wish to edit or enter. You may exit this menu choice without programming
a tag or, once programmed, press ENTER to return back one menu with the tag in place.
The way data is displayed on the chart or recorded to disk is a function of three things: the input scale, the
output scale and the chart scale. These may be programmed independently to provide a full scale output of
any range of the input.
3.8.2 Input Scale
Select Input scale from the menu and press ENTER. You will be presented with the value to represent the low
or bottom end of the input scale and for this range, it will default to 0. Up to thirteen characters can be entered.
The number can be in floating point format using the E Key. It may be positive or negative, right or left justified.
For our programming example, accept 0 as the low end and press ENTER. You will now be presented with the
option to program the high value. This value will default at 1.25. For the sake of our exercise, enter 1.0 and
press ENTER.