Boolean Logic Modules; Comparator - Busch-Jaeger Busch-ComfortTouch Product Manual

9.1.3.2

Boolean logic modules

Under Boolean operators in the library area, you can find
modules that make the following logical arithmetic opera-
tions possible:
AND modules offer the option of the AND

linking of 2-8 inputs.
OR modules offer the option of the OR

linking of 2-8 inputs.
XOR modules offer the option of the exc-

lusive OR function linking of 2-8 inputs.
NOT modules offer the option of inverting

logical values.
9.1.3.3

Comparator

Under Comparator in the library area, you can find modu-
les that compare or check the values at the inputs:
Equal: Checks the values of both inputs for

compliance.
Not equal: Checks the values of both in-

puts for inequality.
Greater: Checks whether the one input va-

lue is greater than the other input value.
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Greater or equal: Checks whether the one

input value is greater than or equal to the
other input value.
Less: Checks whether the one input value

is less than the other input value.
Less or equal: Checks whether the one

input value is less than or equal to the other
input value.
Area tester (internal) specifies whether

an incoming comparison value lies between
two limit values.
Area tester (external) specifies whether

an incoming comparison value lies outside two
limit values.
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