plc design - 10.10

3.The first wrap is done by turning on output paper for 1 second.

4.The paper is then folded by turning on the crease output for 0.5 seconds.

5.An adhesive is applied by turning on output tape for 0.75 seconds.

6.The part is release by turning off output hold.

7.The process pauses until the part sensors goes off, and then the machine returns to idle.

10.7PRACTICE PROBLEM SOLUTIONS

1.

on

T4:0/DN

T4:1/DN

T4:2/DN

T4:3/DN

T4:0/TT

T4:2/TT

T4:4/TT

TON

Timer T4:0

Base 1s

Preset 2

TON

Timer T4:1

Base 1s

Preset 3

TON

Timer T4:2

Base 1s

Preset 1

TON

Timer T4:3

Base 1s

Preset 2

TON

Timer T4:4

Base 1s

Preset 1

output

plc design - 10.11

2.

A

stop

TON

T4:0

T4:0/EN

0.100 s

TON

T4:1

0.300 s

TON

T4:2

0.500 s

TON

T4:3

0.700 s

TON

T4:4

0.900 s

TON

T4:5

1.100 s

TON

T4:6

1.900 s

T4:0/TT

X

T4:2/DN

T4:6/DN

T4:0/DN

T4:1/DN

Y

T4:2/DN

T4:3/DN

T4:4/DN

T4:5/DN

T4:5/TT

Z

plc design - 10.12

3.

(for both solutions

step2

hold

step3

step4

step5

step2

paper

step3

crease

step4

tape

plc design - 10.13

(without latches

first pass

part

step1

step1

part

stop

T4:0/DN

stop

part

step2

step2

TON

step2

T4:0

delay 1 s

T4:1/DN

stop

T4:0/DN

step3

step3

TON

step3

T4:1

delay 0.5 s

T4:1/DN

T4:2/DN

stop

step4

step4

step4

TON

T4:2

delay 0.75 s

T4:2/DN

part

stop

step5

step5