9) Answer the questions, in sequence, for the jump to-subroutine and return program in the figure below. Assume all switches are turned off after each operation. a. Switches S1, S3, S4, and S5 are all turned on. Which pilot light will not be turned on? Why? b. Switch S2 is turned on and then switch S4 is turned on. Will output PL3 be energized? Why? c. To what rung does the RET instruction return the program scan? 11 Ladder logic program Main program file 2 Inputs L1 Outputs S1 PL1 L2 too S1 PL1 S2 JSR O S2 JUMP-TO-SUBROUTINE HE SBR file number U:3 PL2 -S3 S3 PL2 H PL3- oo-S4 S5 PL4 -S5 PL4 Subroutine file 3 S4 PL3 SBR SUBROUTINE RET RETURN

Introductory Circuit Analysis (13th Edition)
13th Edition
ISBN:9780133923605
Author:Robert L. Boylestad
Publisher:Robert L. Boylestad
Chapter1: Introduction
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9) Answer the questions, in sequence, for the jump to-subroutine and return program in the
figure below. Assume all switches are turned off after each operation.
a. Switches S1, S3, S4, and S5 are all turned on. Which pilot light will not be turned on?
Why?
b. Switch S2 is turned on and then switch S4 is turned on. Will output PL3 be energized?
Why?
c. To what rung does the RET instruction return the program scan?
11
Ladder logic program
Main program file 2
Inputs
L1
Outputs
S1
PL1
L2
too
S1
PL1
S2
JSR
O S2
JUMP-TO-SUBROUTINE
SBR file number U:3
PL2
-S3
S3
PL2
H PL3-
oo-S4
S5
PL4
-S5
PL4
Subroutine file 3
S4
PL3
SBR
SUBROUTINE
RET-
RETURN
Transcribed Image Text:9) Answer the questions, in sequence, for the jump to-subroutine and return program in the figure below. Assume all switches are turned off after each operation. a. Switches S1, S3, S4, and S5 are all turned on. Which pilot light will not be turned on? Why? b. Switch S2 is turned on and then switch S4 is turned on. Will output PL3 be energized? Why? c. To what rung does the RET instruction return the program scan? 11 Ladder logic program Main program file 2 Inputs L1 Outputs S1 PL1 L2 too S1 PL1 S2 JSR O S2 JUMP-TO-SUBROUTINE SBR file number U:3 PL2 -S3 S3 PL2 H PL3- oo-S4 S5 PL4 -S5 PL4 Subroutine file 3 S4 PL3 SBR SUBROUTINE RET- RETURN
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