Nematron Pointe Controller - Manual (Page 128)

Chapter 5: Developing Controller Programs Pointe Controller User Guide
126
7. Select the model number that corresponds to the operator panel, if any,
that is actually connected to your Pointe Controller unit. In this example,
an OL3850 Operator Terminal is selected.
8. Proceed to Configuring I/O modules , or click OK to save your changes and
close the window.
Scan Intervals and Scanner Overload
Each installed I/O module has a Scan Interval which determines how frequently
the module is
scanned by the Pointe Controller unit. In most cases, the default
values should be used. However, if you encounter performance issues while
running a compiled program, you may need to adjust the values in order to tune
processor and memory usage.
Also, if you install modules that require extremely low Scan Intervals (for
example, the OL2602 has a default Scan Interval of 3), then you may be warned
of a Scanner Overload. To avoid the overload, you must either increase the
modules’ Scan Intervals or redesign your project to use fewer or different
modules.
For more information, see Chapter 4, “System Design and Installation,” starting
on page 70.