How to make the system start PLC ladder diagram Program

when your learn plc programming , you must need plc system start up. PLC system start up  include    Start self-locking, without self-locking.
but how you choose the ladder diagram?
If the hardware buttons circuit with a reset function you need to use with self-locking startup programs;

If the hardware buttons circuit without  a reset function you need to use without self-locking startup programs;

 

with self-locking startup program ladder diagram


without self-locking startup program  ladder diagram
 


 

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