As shown in figure "A" of the illustration,...

As shown in figure "A" of the illustration,...

Question 1 of 270705eccefa5bacbc34ba4d486e4

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1 if PV is set at 10? See illustration EL-0258.

Question 1 of 27070

Q

As shown in figure "A" of the illustration, what causes the Boolean output at "Q" to be set to 1 if PV is set at 10? See illustration EL-0258.

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🔍 Key Concepts

• Review how a CTU (count-up) counter function block works in standard IEC symbols. • Understand the roles of CU (count up input), R (reset input), PV (preset value), CV (current value), and Q (Boolean output) in figure A. • Think about when a counter’s Q output turns TRUE (1) in relation to the preset value PV.

💭 Think About

• Look at the label on block A: is it a counter that adds counts or subtracts counts? Which input actually changes the current value (CV)? • What does the reset (R) input do in most counters: does it add to the count, clear the count, or trigger the output directly? • When PV is set to 10, what exact condition involving CV must be satisfied before Q becomes 1 in a standard IEC CTU? Which of the listed inputs is responsible for making CV reach that condition?

✅ Before You Answer

• Verify which input in figure A is connected to the action that increments CV (the current count). • Confirm that Q is only an output, not something that ‘counts pulses’ itself. • Check whether the reset input R contributes to the count or simply clears CV and Q, and then decide which option correctly describes what must reach 10.