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Old June 13th, 2018, 06:14 AM   #1
KULDEEP SHARMA0022
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interlocking in plc program

thanks frnds for your response.My question is ":

what is interlocking and how it works in plc program,plz explain.
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Old June 13th, 2018, 06:50 AM   #2
gclshortt
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https://www.quora.com/What-is-interlocking-in-PLC

The above link may help you out. Do you have an application?

Regards,
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Old June 13th, 2018, 12:21 PM   #3
James Mcquade
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interlocking can be considered in several ways.

stop and go signals between machines is a good example.
consider a large press that makes car doors and has 3 machines.
#1 robot to load the part.
#2 the press itself
#3 the robot to unload the part.

you press the start button (machine is empty).
the system looks to see of everything is in the home position.
yes, keep going - no give an error

1. robot 1 loads the part and goes home.
a part loaded signal is sent to the press.
2. the press operates and goes home.
a part processed signal is sent to robot #2
3. robot #2 removes the part and goes home.
a part removed signal is sent to robot #1 to load the next part (step 1)

this is a very simplified version of interlocks, but you can see that each machine depends on the signals from the others.

I hope this helps,
james
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