Today’s Activity

1. Today’s Activity ? Diagram: X

2. What is Diagram X??? • The objective of this activity is to complete a given diagram by naming the blocks and lines in it. • The facilitator can guide the learners by giving clues. • Finally, from this activity; the learners can come up with the title of the block diagram.

3. Rules: • The class can be divided into 3 teams (Team A, B, C) • For each question, the respective team should nominate a leader; who will finally give the answer. • The team members can discuss among themselves at any point of time. • For each question, 3 clues will be given for the team; in which, the last clue will be the beginning letter of the answer. • The scoring can be as follows: • 5 Points (for no clues) • 3 Points (for 1 clue) • 2 Points (for 2 clues) and • 1 Point (for 3 clues)

4. 18 8 9 1 3 4 7 6 5 2 10 11 12 15 17 13 16 14 Output Channels Input Channels

5. Score Board:

6. Just to have an idea of the questions framed, the sample clues for Block 1 is shown here.

7. Clues for Block 1 • This is the heart of any embedded systems. • It can perform arithmetic and logical operations. • It starts with a letter ‘C’ Answer: CPU

8. Similarly, questions for all the blocks can be framed incorporating the proper clues for each. • Finally, we can show the complete architecture of PLC to the learners.

9. Architecture of PLC 18 8 Address Bus 9 Control Bus User Program RAM 5 CPU 2 System ROM Data RAM I/O Modules battery 3 4 7 6 1 CLK 10 Data Bus I/O Bus 11 12 Buffer 15 Latch Program Panel & Monitor 17 13 Driver Interface Opto-Couplers 16 14 Driver Output Channels Input Channels

10. Thanks For your Co-operation