As shown in figures "A" and "B" of the...

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Question 1 of 205eccefa5bacbc34ba4d48870

As shown in figures "A" and "B" of the illustration which represent PLC ladder and input/output diagrams of an SR bistable latch function block, what statement is true? See illustration EL-0247.

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Question 1 of 20

5eccefa5bacbc34ba4d48870

As shown in figures "A" and "B" of the illustration which represent PLC ladder and input/output diagrams of an SR bistable latch function block, what statement is true? See illustration EL-0247.

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🔍 Key Concepts

• SR bistable latch (Set/Reset memory) function in PLCs • Difference between a momentary input and a maintained (held) input in a latch • How the output trace in diagram B behaves after Input 1 or Input 2 turn OFF

💭 Think About

• Look at the timing diagram B: After Input 1 turns ON briefly and then turns OFF, what happens to the Output? Does it stay ON or turn OFF immediately? • Later, when Input 2 turns ON briefly and then turns OFF, what happens to the Output? Which input is acting as the Set and which as the Reset? • For a memory (latch) block, once the output is energized, what condition must occur to make it de‑energize again?

✅ Before You Answer

• Carefully match the ON/OFF transitions of Output to those of Input 1 and Input 2 in figure B. • Identify which input must be present continuously versus which can be momentary for the Output to remain energized. • Confirm which input is the Set (S) and which is the Reset (R) in the SR memory block in figure A.

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Question 1 of 205eccefa5bacbc34ba4d48870

As shown in figures "A" and "B" of the illustration which represent PLC ladder and input/output diagrams of an SR bistable latch function block, what statement is true? See illustration EL-0247.

Back

Question 1 of 20

5eccefa5bacbc34ba4d48870

As shown in figures "A" and "B" of the illustration which represent PLC ladder and input/output diagrams of an SR bistable latch function block, what statement is true? See illustration EL-0247.

No comments yet

Be the first to share your thoughts!

If the question has a related picture, it will appear here.

🔍 Key Concepts

💭 Think About

✅ Before You Answer

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