15
97
15 - Graphical programming
The program is now nished, and all you need to do is click Save. Since the tool creates and uploads
a user script le, the WMPro has to restart. You will be unable to use the device for a few minutes.
15�3 Inputs
An input is a data source that provides information to the graphical program. The input options are
channel, parameter, alarm, calendar and constant. Depending on the input, the list box underneath
contains the type of the object you selected. The exception is CONSTANT. If you choose this input, a
eld appears instead of the list box, where you can enter a constant value.
You can only position inputs in the rst column of squares at the left of the workspace. This column
is bordered by a thicker blue line, creating a margin.
15�4 Outputs
Outputs are always channels. The tool is unable to detect what the channels are used for. That is why
all channels appear in the list, even if they are inputs, calculation channels for databases, or not used
at all. You can position outputs anywhere on the workspace apart from the column on the left, and
there is nothing to stop you including more than one. You could use the same output several times
in the same program, or in dierent programs in the same device. This might not be such a good
idea, however, because the value of the outputs would not be clearly dened.
15�5 Operators
To Next Page
Loading...
Need help?
General