Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8 Manual de usuario descargar pdf (Pagina 213)

18Ć25On Line Menu: Monitoring and Editing Tasks

18.4.6

Modifying a Preset

To modify the preset value for a COUNTER or TIME_ON or

TIME_OFF block, follow the directions below. You cannot use this

function if the preset is currently forced.

1. Enter F3, followed by P" for Preset.

2. Enter the name of the task in which the preset is to be modified.

3. At the next prompt, enter the name of the preset followed by a %

sign.

The name you enter must

be an existing integer name or an

error message will be displayed.

4. Enter the new value. The new value is written into the variable

and is saved as a part of the task. The unit is 1/10 of a second.

The new value must be in the range of 1 to 32767 for timers and

-32768 to +32767 for counters.

18.4.7 Forcing a Variable

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.

You can access the same functions allowed in the Force menu

described

in 18.5 to force a variable while in the

PC Monitor

. Strings,

array elements, and tunable variables cannot be forced. Only

booleans, single precision integers, double precision integers, and

reals can be forced. Once a variable is forced, its value cannot be

altered

by application tasks or the status of physical I/O

. Its value can

only be changed by forcing it to another value or unforcing it. See

18.4.8 for more information about unforcing a variable. To force a

variable, follow the directions below.

1. Enter F3, followed by F" for Force.

2. Enter the name of the task in which the variable is to be forced. If

the variable is common, skip over this step.

3. Enter the name of the variable. The variable name must be

terminated by the @ character for boolean variables, the %

character for integer variables, or the ! character for double

integer variables. Forced boolean variables are shown blinking

on the display.

4. Enter

the value to which the variable is to be forced

in the V

alue"

field.

5. Y

ou can enter further values for

the

variable without entering F3 F

if you have not exited using the <Esc> key. Enter the new value

over the old.

6. To exit, type <ESC>.

7. To unforce a variable or all variables, follow the directions in

18.4.8.

1 2 ... 208 209 210 211 212 213 214 215 216 217 218 ... 297 298

Comentarios a estos manuales

Sin comentarios

Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8 Manual de usuario Pagina 213

Comentarios a estos manuales

Relacionado con productos y manuales para Equipo Rockwell-automation 57C620 AutoMax Programming Executive Version 3.8