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|Local Control Function (LCF ) blocks are a standard feature in most of
duTec's remote I/O products.
Residing in firmware, LCFs perform STANDALONE, close-looped control of processes from within the remote I/O device itself.
The remote I/O device can still operate as a slave device when the control schemes are running. This allows for the exchange of set point values or other data to be read or set from the host computer.
|With duTec's LCF Program Generator you can configure a PID
controller, with optional analog or time-proportional digital output. You
can also choose to define control sequences using familiar ladder-logic form.
Other LCF functions include analog comparisons, AND/OR/NOR gates, truth table
functions, and deadband controllers. The power to configure analog and digital
I/O into local control schemes is enhanced by duTec's unique ability to mix
individual analog and/or digital I/O points on a single rack.
The LCF demo contains an example control block which shows how STANDALONE temperature control of a heater might be configured. The example illustrates a few of the LCF functions available, and the ease with which they can be configured.
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