Content deleted Content added
m =PLC= |
m =Examples= added compressor |
||
Line 7:
A simple program could maintain the level of water in a tank between two float switches by opening and closing an electric valve. A slightly more complex arrangement could involve a scale under the tank (as an input) and a flow controller (as an output) allowing water to flow at a controlled rate. A typical industrial application might control several tanks in a process such as sewage treatment. Each tank might be watched for a variety of conditions such as being too full or too empty or having the wrong pH.
Multi-stage compressors and other large equipment might be controlled by a PLC.
== Analog vs Digital Inputs and Outputs ==
| |||