Honeywell EXCEL 5000 User Manual page 130

ALPHABETIC REFERENCE
74-5577–33 (US)
EN2B-0184 GE51 R0518 (Europe)
LIN
POL
"
(
)
/
*
-
+
0-9
.
See the Function Hierarchy note for the rules of order that the MAT
operator follows in solving a formula.
The SQRT function calculates the square root of an argument. For
example, a formula with a square root can look like this: y =
SQRT(2*x+5). The argument must be in parentheses or brackets if it
includes more than one term. The controller calculates the square root
function on the basis of the corresponding Taylor series and therefore
requires much computer time.
The e^x function calculates the x power of Euler's number (e = 2.7171)
for an argument, for example: y = e^x(2*xw-5). The argument must be in
parentheses or brackets if it includes more than one term. The controller
calculates the logarithm function on the basis of the corresponding
Taylor series and therefore requires much computer time.
The INT, DIFT, LIN, and POL functions are complex functions that
display a dialog box for further information when you select them. See
the Dialog Box sections following this section for details on their
operation. You can use only one of these functions in a formula.
RESULT: As you select and type items, they appear in the Math Editor
dialog box.
4. Click OK to save a formula and close the dialog box.
Or, click Cancel to close the dialog box without saving.
RESULT: Software checks the formula for errors and displays message
boxes if there are any. If there are no errors, software saves the
formula.
If you forget to add quotes to a user address, software displays an
error message box saying "Missing double quote".
If there are illegal characters in the formula or a user address in
the formula, software displays "Illegal character in math
expression" or "Illegal character in User Address".
5. In the Switching logic function, the formula is now complete.
In the Control strategy function, you must connect the MAT icon to another icon
as an input. See the Connection of the MAT Icon to a Control Icon section for
procedure.
132
EXCEL CARE CONTROL ICONS
Linear
Polynomial
Double quotes (to enclose a user address name)
Left bracket
Right bracket
Divide
Multiply
Subtract
Add
Numbers
Decimal point