122-28176 Parallax Inc, 122-28176 Datasheet - Page 243

GUIDE STUDENT PROCESS CONTROL

122-28176

Manufacturer Part Number
122-28176
Description
GUIDE STUDENT PROCESS CONTROL
Manufacturer
Parallax Inc
Datasheets

Specifications of 122-28176

Accessory Type
Manual
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Propeller Education (PE) Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Chapter 7: Closed Loop Process Control · Page 233
still result in some amount of overshoot and undershoot. We are accepting a wider
variance in temperature. When processes allow this variance, differential-gap control is
usually preferred over simple on-off control.
Parts Required
Same as previous Activity
Modifying the program and StampPlot only requires a little code to adapt the BASIC
Stamp program and the StampPlot macro. Figure 7-9 is a flowchart representing the
control action. The allowable band must be read from StampPlot, values for Upper Trip
Point (UTP) and Lower Trip Point (LTP) calculated, and the heater controlled based on
these setpoints.
Figure 7-9 Representative Flow Chart of Differential-Gap Control

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