Super Systems Compact HMI - Manual (Page 19)

Compact HMI and Compact HMI Editor Operations Manual
Super Systems Inc. Page 19 of 60
Operator/Constant/
Function
Purpose Examples of Use in Valid Expression
Xor Inclusive of one condition,
exclusive of a second
condition
(Tag(“[Connection1]N7:0”) <= 15) xor
(Tag(“[Connection1]N7:0”) = 5)
Math Functions
Abs
Absolute value Abs(Tag(“[Connection1]N7:0”))
Exp Calculates base e raised to a
specified power
Exp(Tag(“[Connection1]N7:0”))
Note: Exp(3) calculates e to the power of 3
Log10 Base 10 logarithm Log10(Tag(“[Connection1]N7:0”))
Log10(100) returns 2
Sin Sine (trigonometric) Sin(Tag(“[Connection1]N7:0”))
Asin Arcsine or inverse sine
(trigonometric)
Asin(Tag(“[Connection1]N7:0”))
Min Minimum Min(Tag(“[Connection1]N7:0”),Tag(“[Connection1]N7:1”),
Tag(“[Connection1]N7:2”),Tag(“[Connection1]N7:3”))
Max Maximum Max(Tag(“[Connection1]N7:0”),Tag(“[Connection1]N7:1”),
Tag(“[Connection1]N7:2”),Tag(“[Connection1]N7:3”))
Sqrt Square root Sqrt(Tag(“[Connection1]N7:1”))
Cos Cosine (trigonometric) Cos(Tag(“[Connection1]N7:1”))
Acos Arccosine or inverse cosine
(trigonometric)
Acos(Tag(“[Connection1]N7:1”))
Tan Tangent (trigonometric) Tan(Tag(“[Connection1]N7:1”))
Atan Arctangent or inverse
tangent (trigonometric)
Atan(Tag(“[Connection1]N7:1”))
Logical Functions
If
Returns a value of TRUE or
FALSE
Syntax:
If(condition,return_if_true
,return_if_false)
, where
condition is the condition
evaluated,
return_if_true
is the value returned if the
condition is true,
return_if_false
is the
value returned if the
condition is false)
If(Tag(“[Connection1]N7:0”)<Tag(“[Connection1]N7:1”),1,0)
Note: If(2<3,1,0) returns 1
Table 2 - Expression Operators, Constants, and Functions in Expression Editor
Display Conditions
Display Conditions determine display elements for control objects by using the results of
evaluated expressions. The display conditions are found in the properties grid for controls. You
can also bring up the display conditions by double clicking on the control object for which you
want to set the display conditions.
NOTE: Some Display Conditions and the Expression Editor (described in more detail above)
utilize Tags.