Fidelix FX-RP multiDISPLAY
Programming manual
page 21 of 38
You can also use other points as minimum and
maximum. In that case, both minimum and
maximum need to be points, meaning it is not
allowed to have a fixed upper limit and a variable
lower limit. When using the minimum and
maximum like that, make sure you don’t allow the
user to enter values that are not possible; often
you’ll want to set these dynamic minimum and
maximum values from the Modbus master and not
show them on screen at all.
Math operators
Display points can also contain a locally calculated value based on 2 other points. Know that all values are
considered as integers, so divisions shown on the screen are not taken into account, and any value for a division
smaller than “1”, will give you the result of zero. You can use math operators for instance to calculate the local
setpoint for a building-wide general, dynamic setpoint with local offset, or to let the end-user enter the water or
energy price they pay, and, by simply sending the actual consumption to the screen, show the price that needs
to be paid.
To use math operators, simply add a suffix to the pointID field:
POINTxx#MATH:POINTzz
POINTxx#MATH:POINTyy-POINTzz
POINTxx#MATH:POINTyy*POINTzz
POINTxx#MATH:POINTyy/POINTzz
This function is only available during slave mode operation.
Status texts
By default, the number of different
texts for fixed values (so called
“Status Texts”) is 20. These are texts
like “On, Slow, Fast” that you can
define in the yellow box of the
EditPoint dialog box when editing a
Text type element. This is useful
when you for instance make a button
with three statuses (0, 1 and 2) and
you want to have a text changing
accordingly to show the end user
what status the button is currently in.
Make sure you untick the “Show
point value” tick box to show the entered texts.
The Graphics editor limits the number of these statuses to 20, but you can add more by creating a file inside
your project folder containing the texts for each status. The file is linked by writing its name in the second “Text”
box like this:
The content of the linked .txt
file should be formatted as
follows:
0, value zero, #000000
1, first text, #000000
2, second text, green
3, third text, #000000
4, fourth text, #000000
…
