plc code question

[philspargo]

I'm trying to learn PLC and have a problem following the code.
 
After  a "callsub", does the the program return to start OR the next line after the "callsub" ? 
 
Once I understand the basic flow of the program, I'll be able to make some progress.
 
Thanks!

 

[CAI_Support]

It returns to next line after callsub, after running into RET in the sub.
Once it reaches to END, it will go to START.