Watlow LogicPro Instrukcja Użytkownika Pobierz pdf (Strona 256)

Chapter 15: Downloading & Monitoring LogicPro User’s Guide

240 Watlow Anafaze Doc.# 28002-00 Rev 3.00

Function blocks with variables assigned to Inputs or Outputs

show the variables' current values.

Figure 15.4 Monitoring Ladder Diagrams

Monitoring Function Block Diagrams

In a Function Block Diagram, only the variables change color

to indicate activity. When a Boolean element is true (has a

value of 1) that element is highlighted in green. Otherwise,

monitoring an FBD program is the same as monitoring a

Ladder program.

Values only appear with their associated variable block. If a

variable is not associated with a variable block, its value will

appear next to the Function Block.

NOTE! No online changes can be made in a FBD pro-

gram.

Forcing I/O

Boolean variables can be forced on or off while monitoring an

SFC or ladder diagram program running in a controller.

CAUTION! Variables remain in their forced states until you

clear or disable the forced condition(s), or termi-

nate the logic program. Closing the monitor win-

dow or LogicPro will not clear or disable forced

variables. Force variables only when you are sure

it is safe to do so.

To control I/O forcing while monitoring:

1. Right click on the [I/O] variable. The Force-Clear I/O

dialog box appears.

2. Click one of the following buttons, depending on what

you want to do:

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