Programmable Logic Controllers
5th Edition
ISBN: 9780073373843
Author: Frank D. Petruzella
Publisher: McGraw-Hill Education
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Chapter 15.3, Problem 1P
Modify the original CLX ten-second TON timer
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Design a 1-minute timer using a 60 Hz power line as an interrupting source. The output
ports should display minutes and seconds in BCD. At the end of the minute, the output
ports should continue displaying one minute and zero seconds.
2. Draw the timing diagram for the Clocked SR flip-flop at each of the instants t0 to t6 as described in the class meeting.
a. at t0, Q is low, S is low, R is low
b. at t0, Q is high, S is low, R is low
Be sure to include the clock signal in the timing diagram.
The timing diagram in Figure 8.99 shows the input waveforms of a NAND latch.
Complete the diagram by showing the output waveforms.
8.7
Ans: (Note: you can plot the timing on the above figure.)
Chapter 15 Solutions
Programmable Logic Controllers
Ch. 15.1 - Prob. 1RQCh. 15.1 - Prob. 2RQCh. 15.1 - Prob. 3RQCh. 15.1 - Prob. 4RQCh. 15.1 - Prob. 5RQCh. 15.1 - Prob. 6RQCh. 15.1 - Prob. 7RQCh. 15.1 - Prob. 8RQCh. 15.1 - Prob. 9RQCh. 15.1 - Prob. 10RQ
Ch. 15.1 - Prob. 11RQCh. 15.1 - Compare the accessibility of program scope and...Ch. 15.1 - Prob. 13RQCh. 15.1 - What is the difference between a produced tag and...Ch. 15.1 - Prob. 15RQCh. 15.1 - State the data type used for each of the...Ch. 15.1 - Describe the make-up of a predefined structure.Ch. 15.1 - Describe the make-up of a module-defined...Ch. 15.1 - Describe the make-up of a user-defined structure.Ch. 15.1 - Prob. 20RQCh. 15.1 - Prob. 21RQCh. 15.1 - Prob. 22RQCh. 15.1 - Prob. 23RQCh. 15.2 - Prob. 1RQCh. 15.2 - Prob. 2RQCh. 15.2 - Prob. 3RQCh. 15.2 - Prob. 4RQCh. 15.2 - Prob. 5RQCh. 15.2 - Prob. 6RQCh. 15.2 - Prob. 7RQCh. 15.2 - Prob. 8RQCh. 15.2 - Prob. 9RQCh. 15.2 - Prob. 10RQCh. 15.2 - Prob. 11RQCh. 15.2 - Extend control of the original ControlLogix...Ch. 15.2 - Prob. 3PCh. 15.3 - Prob. 1RQCh. 15.3 - Prob. 2RQCh. 15.3 - Prob. 3RQCh. 15.3 - Prob. 4RQCh. 15.3 - Prob. 5RQCh. 15.3 - Prob. 6RQCh. 15.3 - Prob. 7RQCh. 15.3 - Prob. 8RQCh. 15.3 - Prob. 9RQCh. 15.3 - Prob. 10RQCh. 15.3 - Prob. 11RQCh. 15.3 - Prob. 12RQCh. 15.3 - Modify the original CLX ten-second TON timer...Ch. 15.3 - Prob. 2PCh. 15.3 - Prob. 3PCh. 15.3 - Prob. 4PCh. 15.3 - Prob. 5PCh. 15.3 - Prob. 6PCh. 15.4 - Prob. 1RQCh. 15.4 - Prob. 2RQCh. 15.4 - Prob. 3RQCh. 15.4 - Prob. 4RQCh. 15.4 - Prob. 5RQCh. 15.4 - Prob. 6RQCh. 15.4 - Prob. 7RQCh. 15.4 - Prob. 1PCh. 15.4 - Prob. 2PCh. 15.5 - Prob. 1RQCh. 15.5 - Prob. 2RQCh. 15.5 - Prob. 3RQCh. 15.5 - Prob. 4RQCh. 15.5 - Prob. 5RQCh. 15.5 - Construct a ControlLogix ladder rung with compare...Ch. 15.5 - Prob. 2PCh. 15.5 - A single pole switch is used in place of the two...Ch. 15.6 - Prob. 1RQCh. 15.6 - Name the four basic elements of an FBD.Ch. 15.6 - Prob. 3RQCh. 15.6 - Prob. 4RQCh. 15.6 - Prob. 5RQCh. 15.6 - Prob. 6RQCh. 15.6 - Prob. 7RQCh. 15.6 - Prob. 8RQCh. 15.6 - Prob. 9RQCh. 15.6 - Prob. 10RQCh. 15.6 - Prob. 11RQCh. 15.6 - How is a function block feedback loop created?Ch. 15.6 - Prob. 13RQCh. 15.6 - Prob. 14RQCh. 15.6 - Prob. 1PCh. 15.6 - Prob. 2PCh. 15.6 - Prob. 3PCh. 15.6 - Prob. 4PCh. 15.6 - Prob. 5P
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- The input waveform shown in the figure below is applied to an inverter, which is used to operate a light on a control circuit. Draw the timing diagram of the output waveform in proper relation to the input. VIN HIGH LOW urrarrow_forwardA microcontroller of PIC16F84A and a 7-segment LED are used to form an down- count counter from 9 to 0. The input devices and 7-segment LED on the operation panel are shown in Figure 3.1 while the related electronic circuit and Flowcode program are as shown in Figures 3.2 and 3.3, respectively. Answer the following questions if the counter is operated at high level input voltage those are controlled by the input devices for the data input and stop functions. Count Stop LED Counter Figure 3.1 A countdown counter using 7-segment LED Count (1) X1 U1 16 15 17 OSCICLKIN oscziCLKOUT RAD RA1 18 Stop RAZ RAS RAATOCKI 4 MCLR 4MHZ CRYSTAL C1 C2 RBOINT RB1 RB2 RB3 RB4 RBS RB6 RB7 22pF PIC16F84A SV RO Figure 3.2 Electronic cireuit for the counter -lelalarrow_forwardCounter implementation using timer 1 module in timer mode.Each incremental value will have delay of last 5 seconds, code should be in Mikro C for PIC16F877A.arrow_forward
- 2. The process of adressing each input during one clock pulse is calledarrow_forwardComplete the timing diagram below for the active-HIGH latch shown. The latch is initially set. S R Q C S R 10 Qarrow_forward3. Study the ladder logic program in Figure 7-40 and answer the questions that follow: a. What type of timer has been programmed? b. What is the length of the time-delay period? c. What is the value of the accumulated time when power is first applied? d. When does the timer start timing? e. When does the timer stop timing and reset itself? f. When input LS1 is first closed, which rungs are true and which are false? L1 Input LS1 Ladder logic program Outputs L2 LS1 -TON TIMER ON DELAY Timer T4:0 -(EN)- Time base 1 Preset 10(DN) SOL A-fo Accumulated ° SOL B-of T4:0 SOL A 2 3 4 10 DN T4:0 SOL B DN T4:0 R EN T4:0 EN Figure 7-40 Ladder logic program for Problem 3. Rarrow_forward
- Design an embedded C code, based on STM32F100RB microcontroller, for blinking two LEDs connected with PC0 and PC1 alternatively WHILE the switch connected at PA1 is pressed, with a delay of 500 ms using Timer 2. Note: Include # define directives, timer functions and main function as well.arrow_forwardWhat is the purpose of hysteresis on the comparators inputs? Slow down the comparator to filter out noise Prevent noise from causing the output to switch multiple times during a transition Speed up the time response of the comparator Provide a more accurate threshold voltagearrow_forwardWrite a Test Bench for the Five-Cycles High Laser Timer (please see the VHDL code for reference).arrow_forward
- Consider the following T flip flop timing diagram: What type of clock trigger is used? Clk Q No Correct answer Falling Edge Trigger Rising Edge Trigger Falling and Risingarrow_forwardA taco generator is use as a sensor to detect the speed of a rotating motor. The o/p of the tacho is between Ov and 5v where the midrange (2.5v) is equivalent to that the motor is standstill. When motor accelerates CW toward full speed, the tacho o/p will vary from 2.5v to 5v and when the input of tacho varies from 2.5v down to Ov means the motor is accelerating towards cCW. The Scenario is to reflect the equivalent speed on two SSDS which one will read the equivalent speed of reading 5 for maximum Cw (5v) and the other will also read 5 for maximum CCW (Ov) equivalent speed in the reverse direction. Taco generator input is connected to PA4, the CW SSD on PORTB and the CCW SD on PORTC Write ATmega 16 program sketch to follow the above scenario REFS1 REFSO Voltage Reference Selection AREF, Internal Vref turned off AVCC with external capacitor at AREF pin 1 Reserved 1 Internal 2.56V Voltage Reference with external capacitor at AREF pin ADPS2 ADPS1 ADPSO Division Factor 2 1 1 1 1 16 1 32 1…arrow_forwardomplete the timing diagram for the gated latch shown below. S R EN O Q is initially LOW S A EN S P 票。arrow_forward
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What is a Flow Switch and how do they work?; Author: OMEGA Engineering;https://www.youtube.com/watch?v=pGKCXIlmmdY;License: Standard Youtube License