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LogicPro User’s Guide Chapter 11: User Defined Function Blocks

Doc.# 28002-00 Rev 3.00 Watlow Anafaze 169

6. Define the Variables that will be used as inputs and

outputs, as well as internally by the Function Block.

Refer to “In’s, Out's and Internals”

below.

7. Click [OK] to create the new UDFB

– or –

[Cancel] to terminate the process.

Figure 11.1 New UDFB Dialog Box

In’s, Out's and Internals

IN's - contains the symbol and type of Inputs to the UDFB.

OUT’s - contains the symbol and type of Outputs from the

UDFB.

Internal - contains the symbol and type of internal

assignment. They may also be used as extra inputs and

outputs, but they will not be displayed. The major differences

between Internals and Ins are that internals are:

• Not displayable in Ladder diagrams.

• Only constants.

NOTE! Variables can be used, but not changed on-line.

The symbol is the name of the particular input, output or

internal when the UDFB is graphically represented in the

Ladder diagram, and must be unique within the UDFB.

LogicPro does not allow two symbols of the same name in one

UDFB.

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Watlow LogicPro Bedienungsanleitung Seite 185