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LogicPro User’s Guide Chapter 10: Function Blocks

Doc.# 28002-00 Rev 3.00 Watlow Anafaze 157

Logical

The following section describes the logical function blocks

found in the standard category.

Logical And (AND)

The Logical AND function block, shown in Figure 10.37, acts

exactly like a logical “and” gate. If both inputs are True, the

output is enabled. On the other hand, if even one of the inputs

are False, the output is disabled. All inputs and outputs of this

function block must be Boolean.

Figure 10.37 The Logical AND Function Block

Inputs

A -- Boolean input element.

B -- Boolean input element.

Outputs

C -- Boolean output element.

Logical Or (OR)

The Logical OR function block, shown in Figure 10.38, acts

exactly like a logical “or” gate. If either or both of the inputs

are True, the output is enabled. On the other hand, if all of the

inputs are False, the output is disabled. All inputs and outputs

of this function block must be Boolean.

Figure 10.38 The Logical OR Function Block

Inputs

A -- Boolean input element.

B -- Boolean input element.

Outputs

C -- Boolean output element.

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