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1- Write a PLC ladder program to implement the process illustrated in Figure. 2- Indicate all the input and output field devices in their un-actuated conditions with symbolic addresses. The sequence of operation requires that: • Normally open start push button and normally closed stop push button station is used to start and stop the process. • When the process starts, the tank is empty and solenoid A energizes to start filling the tank with liquid. • As the tank fills, the Empty sensor switch closes. When the tank is half full, the Mid-full level sensor switch closes and the motor starts running to mix the liquid. When the tank is full, the Full level sensor switch closes momentarily so that: a- The motor stops. b- Solenoid A is de-energized. c- Solenoid B is energized to empty the tank. When the tank is completely empty, the Empty sensor switch opens to de-energize solenoid B. The start button is pressed to repeat the sequence. SOLA Motor Full level sensor switch Mid-Full level sensor Empty switch sensor switch -SOL B Startistop control station

1- Write a PLC ladder program to implement the process illustrated in Figure. 2- Indicate all the input and output field devices in their un-actuated conditions with symbolic addresses. The sequence of operation requires that: • Normally open start push button and normally closed stop push button station is used to start and stop the process. • When the process starts, the tank is empty and solenoid A energizes to start filling the tank with liquid. • As the tank fills, the Empty sensor switch closes. When the tank is half full, the Mid-full level sensor switch closes and the motor starts running to mix the liquid. When the tank is full, the Full level sensor switch closes momentarily so that: a- The motor stops. b- Solenoid A is de-energized. c- Solenoid B is energized to empty the tank. When the tank is completely empty, the Empty sensor switch opens to de-energize solenoid B. The start button is pressed to repeat the sequence. SOLA Motor Full level sensor switch Mid-Full level sensor Empty switch sensor switch -SOL B Startistop control station

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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1- Write a PLC ladder program to implement the process illustrated in Figure. 2- Indicate all the input and output field devices in their un-actuated conditions with symbolic addresses. The sequence of operation requires that: Normally open start push button and normally closed stop push button station is used to start and stop the process. When the process starts, the tank is empty and solenoid A energizes to start filling the tank with liquid. As the tank fills, the Empty sensor switch closes. When the tank is half full, the Mid-full level sensor switch closes and the motor starts running to mix the liquid. When the tank is full, the Full level sensor switch closes momentarily so that: a- The motor stops. b- Solenoid A is de-energized. c- Solenoid B is energized to empty the tank. When the tank is completely empty, the Empty sensor switch opens to de-energize solenoid B. The start button is pressed to repeat the sequence. SOL A Motor Full level sensor switch Mid-Full level sensor switch Empty sensor switch SOL B Start/stop control station
Transcribed Image Text:1- Write a PLC ladder program to implement the process illustrated in Figure. 2- Indicate all the input and output field devices in their un-actuated conditions with symbolic addresses. The sequence of operation requires that: Normally open start push button and normally closed stop push button station is used to start and stop the process. When the process starts, the tank is empty and solenoid A energizes to start filling the tank with liquid. As the tank fills, the Empty sensor switch closes. When the tank is half full, the Mid-full level sensor switch closes and the motor starts running to mix the liquid. When the tank is full, the Full level sensor switch closes momentarily so that: a- The motor stops. b- Solenoid A is de-energized. c- Solenoid B is energized to empty the tank. When the tank is completely empty, the Empty sensor switch opens to de-energize solenoid B. The start button is pressed to repeat the sequence. SOL A Motor Full level sensor switch Mid-Full level sensor switch Empty sensor switch SOL B Start/stop control station
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