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Chapter 9: Function Block Diagrams LogicPro User’s Guide

110 Watlow Anafaze Doc.# 28002-00 Rev 3.00

Figure 9.3 Symbolic Name on Function Block

in a FBD program

NOTE! Branched connections are not currently allowed.

Connections can only be made on a one-to-one

basis; in other words, a Variable element can only

be connected to one input or output.

NOTE! Feedback loops to/from a single function block

(connections which both originate and terminate

on the same element or elements of a common

function block) are not allowed. BUT, it is permis-

sible to create a feedback loop to a system of

function blocks.

Assigning Variables to Variable Elements

To assign variables to Variable elements:

1. Select the [Selector] tool.

2. Double-click on the Variable element you wish to assign.

This element must already be connected to either an

input or output. This causes the Variables dialog box to

appear.

3. From the dialog box, select the appropriate Variable

Type and Data Type.

4. Either select the Variable you wish to assign to this

Variable element or click on [Add] to create a new

Variable.

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Watlow LogicPro Manual de usuario Pagina 126