12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 Inputs (RES) L1 T4:2 PB1 (RES) PL PB2 -RTO- RETENTIVE TIMER ON Timer Time base PB1 T4:1 (EN) 1.0 Preset 2900 CON) Accumulated -RTO- PB1 T4:1 RETENTIVE TIMER ON Timer T4:2EN 1.0 Time base Preset Accumulated DN 1780 CON) T4:2 PL HE DN

12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 Inputs (RES) L1 T4:2 PB1 (RES) PL PB2 -RTO- RETENTIVE TIMER ON Timer Time base PB1 T4:1 (EN) 1.0 Preset 2900 CON) Accumulated -RTO- PB1 T4:1 RETENTIVE TIMER ON Timer T4:2EN 1.0 Time base Preset Accumulated DN 1780 CON) T4:2 PL HE DN

Introductory Circuit Analysis (13th Edition)

13th Edition

ISBN:9780133923605

Author:Robert L. Boylestad

Publisher:Robert L. Boylestad

Chapter1: Introduction

Section: Chapter Questions

Problem 1P: Visit your local library (at school or home) and describe the extent to which it provides literature...

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12) Study the ladder logic program in the figure below and answer the questions that follow: a. What is the purpose of interconnecting the two timers? b. How much time must elapse before output PL is energized? c. What two conditions must be satisfied for timer T4:2 to start timing? d. Assume that output PL is on and power to the system is lost. When power is restored, what will the status of this output be? e. When input PB2 is on, what will happen? f. When input PB1 is on, how much accumulate. Ladder logic program Output PB2 L2 T4:1 (RES Inputs L1 T4:2 (RES PB1 PL PB2 -RTO PB1 RETENTIVE TIMER ON T4:1 EN 1.0 2900 CON) Timer Time base Preset Accumulated -RTO PB1 T4:1 RETENTIVE TIMER ON Timer Time base T4:2 (EN) 1.0 DN Preset 1780 ON) Accumulated T4:2 PL HE DN
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