The Formula function, located on the Math menu, enables you to apply mathematical operators to operand values, and then output the result to a register.
To create a formula, place the Formula function in the Ladder; the Edit formula box opens. You can type in constant numbers, parameters and operators. You can also select parameters and operators from the drop-down lists.
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The formula syntax conforms to normal mathematical notation. |
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With the exception of the - (minus) sign, binary operators cannot be used to begin a formula. The other binary operators include Add [+[, Mul [*], Div [/], Parenthesis [( )], and Power. Unary operators, such as Sin, may be used to begin a formula. |
You can create a parameter name using a mixture of characters and numbers.
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A parameter name may not begin with a number or contain spaces. Use an underscore ( _ ) in place of spaces. |
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A constant may not exceed the value of a MF or ML. |
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In the following cases, controller will process the formula using floating registers:
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