PROGRAMMABLE LOGIC CONTROLLER AND MICROCONTROLLERS 6TH Exam/Elect./EEE/5228/May 2017
PROGRAMMABLE LOGIC CONTROLLER & MICRO-CONTROLLER MAY 2017 SECTION-A
Q1. Do as directed. 10×1.5=15
PLC is a Programmable Logic Controller.
Scan Cycle Consist of input scan, executing program(s), and output scan.
A……….. will start timing the delay zero each time.
“ToolTip” which describes the Function will check to see if a value is between two Limits.
Ladder diagram is a representation of the Operational logic of a circuit.
PSW stands for Program Status Word.
A HIGH, on which pin resets the 8051 microcontroller is RST
8051 is a 8 bit Microcontroller.
Assembler are translated by assembler into machine Code.
8051 micro controller has 32 I/O pins.
SECTION-B
Q2. Attempt any five questions. 5×6=30
What are the advantages of PLC system over the traditional hard wired control system?
Explain basic operation and principle of a PLC ?
With the help of pin diagram, explain the function of each pin of PIC microcontroller ?
Write a ladder program, when start push switch (IN001) is pressed, motor A (CR001) turns ON- when stop push switch (INoo2) is pressed, motor A turns OFF and motor B (CR004) turns ON. Motor B should turns OFF automatically after 15 seconds.
Differentiate between microprocessor and microcontroller ?
Explain addressing modes available in in 8051 ?
Explain function of bits of SCON register ?
Explain the applications of microcontrollers ?
SECTION-C
Q3. Attempt any three questions. 3×10=30
Q3. Draw and explain the block diagram of a PLC, Explain the function of each building block.
Q4. Draw the pin diagram of 8051 and explain function of each pin.
Q5. Explain the instruction sets, give two examples in each:
- Basic instructions b) Timer instructions
Q6. Explain different modes of timer operation in 8051.
Q7. With the help of suitable diagrams explain key board interfacing with 8051.
Section a FILL IN THE BLANKS PROGRAMMABLE LOGIC CONTROLLER & MICROCONTROLLER MAY 2017
PLC is a Programmable Logic Controller.
Scan Cycle Consist of input scan, executing program(s), and output scan.
A……….. will start timing the delay zero each time.
“ToolTip” which describes the Function will check to see if a value is between two Limits.
Ladder diagram is a representation of the Operational logic of a circuit.
PSW stands for Program Status Word.
A HIGH, on which pin resets the 8051 microcontroller is RST
8051 is a 8 bit Microcontroller.
Assembler are translated by assembler into machine Code.
8051 micro controller has 32 I/O pins.
PROGRAMMABLE LOGIC CONTROLLER AND MICROCONTROLLERS 6TH SEMESTER Exam EEE/EE/5228/MAY 2017 Click Here
Section B :PROGRAMMABLE LOGIC CONTROLLER & MICROCONTROLLER MAY 2017
Advantages of PLC system over the traditional hard wired control system
Basic operation and principle of a PLC
Function of each pin of PIC microcontroller
ladder program, when start push switch (IN001) is pressed, motor A (CR001) turns ON- when stop push switch (INoo2) is pressed, motor A turns OFF and motor B (CR004) turns ON. Motor B should turns OFF automatically after 15 seconds.
Comparison Microprocessor and Microcontroller
Addressing modes available in in 8051
Function of bits of SCON register
Applications of microcontrollers
PROGRAMMABLE LOGIC CONTROLLER AND MICROCONTROLLERS 6TH SEM EEE/5228/MAY 2017 Click Here
Section c PROGRAMMABLE LOGIC CONTROLLER AND MICRO-CONTROLLERS 6TH SEM MAY 2017 PAPER
Block diagram of a PLC, .
Pin diagram of 8051
Basic instructions in PLC
Timer instructions in PLC
Different modes of timer operation in 8051
key board interfacing with 8051
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