Lenze DDS v2.3 - Manual (Page 22)

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Introduction
2-10
l
DDS EN 2.3
2.3.5 Changing values online
Variables can be set once-only to a specific value during operation after the command Write values
was transmitted to the control. The value of a variable can also be changed online by simply
double-clicking it. Boolean variables thus change from TRUE to FALSE and viceversa. For the other
variables, the system will display a dialog box
Write variable xy to edit the variable value.
2.3.6 Monitoring
In online mode, the current values for all variables displayed on screen will be continuously read from
the control and displayed. Refer declaration and program editor for this display.
Current variable values may be output in the Watch and Receipt Manager and in a visualization.
The display and monitoring of variables from function block instances requires the associated
instance to be opened.
The implementations show the pointer value. The dereferenced value is shown for dereferenced
variables.
Monitoring VAR_IN_OUT variables
When monitoring VAR_IN_OUT variables, the de-referenced value is output in the declaration part
and the program part.
Monitoring Pointers
Warning!
Monitoring of de-referenced pointer values is not supported by all Lenze target systems.
In online mode, it depends on the target system which de-referenced pointer values (pointer
variable^ ) are indicated.
Some Lenze target systems indicate the pointer value itself.
During monitoring the pointer and the de-referenced value are output in the declaration part. In the
program part, only the pointer is output.
pointervariable= <pointer value>
Pt= <value>
The value of the pointer is indicated in the implementations, whereas in the case of de-referencing
only the de-referenced value is indicated.
Monitoring ARRAY components
The following components are displayed:
•
Array components indexed via a constant. anarray[1] = 5
The following components are not displayed:
•
Array components with extended index. anarray[i+j] = 5 or anarray[i+1] = 5
2.3.7 Simulation
During a simulation on the processor, the generated control program will be processed together with
the DDS, offering complete online functionality. The logical correctness of the program can be tested
to a limited extent only without control hardware.
( ^ 6-37)
2.3.8 Log
The log records user actions, internal processes, status changes and exceptions chronologically in
online mode and serves monitoring and error tracing.
( ^ 6-42)
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