Rockwell-automation 47C626 AutoMax Programming Executive V4.2 Instrukcja Użytkownika Pobierz pdf (Strona 205)

18Ć19

18.4 Monitoring and Editing PC Tasks

The

Monitor PC Program command is used to access the AutoMax

Ladder Editor which is used to monitor Ladder programs. This

command appears under the System Configurator Online menu and

the

ask Manager Online menu. Y

ou cannot access the Ladder Editor

while

online. If you attempt to access the AutoMax

Ladder Editor from

the

Online T

ask Manager by selecting PC from the Monitor menu

screen, you will receive the following message: Monitor PC Task via

the System Configurator or Task Manager." You must exit the Online

Task Manager and access the AutoMax Ladder Editor by using the

Monitor PC Program command. Refer to J2Ć3093 for information on

using

the AutoMax Ladder Editor to monitor and edit PC tasks online.

18.5 Forcing Variables

WARNING

THE SET AND FORCE FUNCTIONS BYPASS CONTROL OF THE APPLICATION

PROCESS BY THE APPLICATION TASKS. IT IS THE RESPONSIBILITY OF THE

USER TO DETERMINE THE POTENTIAL HAZARDS INVOLVED. FAILURE TO

OBSERVE THESE PRECAUTIONS COULD RESULT IN BODILY INJURY.

WARNING

VARIABLES

AND OUTPUTS WHICH

ARE FORCED BEFORE AC POWER IS L

OST

WILL

REMAIN FORCED WHEN AC POWER IS RESTORED

. SHOULD AC POWER

BE LOST WHILE VARIABLES ARE FORCED, THE USER MUST ENSURE THAT

UNEXPECTED

MACHINE MO

VEMENT DOES NOT OCCUR WHEN AC POWER IS

RESTORED. FAILURE TO OBSERVE THESE PRECAUTIONS COULD RESULT IN

BODILY INJURY.

From

the

Monitor

menu shown in figure 18.1, you can select F" for

Force to force and unforce up to 64 variables at the same time. Note

that the limit of 64 forced variables applies regardless of the number

of users who have access to the rack. You can only force boolean,

single precision integer, double precision integer, and real variables.

Strings, array elements, and tunable variables cannot not be forced.

A variable that is forced cannot be altered by any application task or

the status of physical I/O. A forced variable will retain its forced value

until it is unforced or forced to a different value.

See 18.5.1 for an explanation of the screen display and 18.5.2 and

18.5.3 for instructions on forcing and unforcing variables.

18.5.1 Monitor

orce Screen Display

The

forcing table for a rack is divided into four pages. Each page

can

list up to 16 variables, numbered 1 to 16. Pages can be switched by

using <P

age Up> to display the next page in the table and

<Page Down> to display the previous page in the table. The page

numbers will scroll, meaning that, if you press <Page Up> from

page 4 of the table, page 1 will be displayed. If you press

<Page Down> from page 1 of the table, page 4 will be displayed.

1 2 ... 200 201 202 203 204 205 206 207 208 209 210 ... 277 278

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