Programmable Logic Controllers
Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 6, Problem 21RQ

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Using tachometer to measure rotational speed:

  • Tachometer is a small AC or DC generator which converts rotational speed into voltage signal.
  • It develops an output voltage proportional to its rpm whose phase or polarity depends on the rotor’s direction of rotation.
  • The rotor of the tachometer is mechanically connected to the load...

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The attached picture shows the RTCAPI memory mapped register which has the address 0x180. 1)  Program the MCU's registers so that     a) SIRC is the clock source     b) the clock is divided by 16K     c) the clock is enabled     d) load is enabled
What is the ALU result if the 4-bit ALU Control signal is 0100? What happens if the ALU Control signal is 0101?
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