JUMO 705010 mTRON T - Multichannel Controller Module Operating Manual - Manual (Page 127)

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8 Configuration – in setup program only
Function
The math and logic functions are available if the "Math/Logic" option in the setup program has
been activated (Project: Hardware arrangement > Globals).
 Manual for setup program B 705000.6, "Project configuration" section
To make these functions available in the controller module, enable them with the setup program
(CPU: Online parameters > Enabling of extra codes).
 Operating manual for central processing unit B 705001.0, "Online parameters" section
Formula
Use the "Formula Editor" button to open an editor that can be used to create formulae by se-
lecting variables and operators. Formulae can be entered freely according to standard mathe-
matical rules. Any number of spaces may be used within the formula symbol string. Spaces are
not admissible in function designations, names of variables, or constants.
Variable B Analog selector Analog signal B (for calculating differen-
tial, ratio, and humidity)
Formula Display of the formula created with the
formula editor (for math and logic)
Default value Replacement value for the result of the math function
-99999 to +99999
(or invalid value: -----)
The replacement value is used if the
math function does not produce a valid
result due to an invalid input value.
An invalid value is specified by default
(display: -----).
Parameter Selection/settings Description
?
TIP!
The trigonometric functions (SIN, COS, and TAN operators) use degrees (360).
CAUTION!
The processing time for math formulae depends on the quantity, their complexity, and the op-
erators used.
In the least favorable case – and if the controller module is at full capacity at the same time
– this may affect the sampling rate of the controller module inputs (extension of sampling in-
terval).
However, this only affects the sampling rate T50ms (sampling interval 50 ms); the other sam-
pling rates are not affected by this. See Chapter 6.4 "Device data", page 54.