2.10
Programming the Sample Configuration
Principle of operation
The state of the sensors connected to inputs I512.0 , I513.0 and I514.0 is looked up and
analyzed. I512.0 increments an internal counter and I513.0 decrements it. Input I514.0 resets
the counter to zero.
Depending on the counter value, outputs Q512.0, Q513.0 and Q514.0 are set or deleted.
Q512.0 is set when the count is 0. At a count < 3, Q514.0 is set and at ≥ 3, Q513.0 is set.
Programming
Change to the component view with View > Component View.
Open the following in succession: SIMATIC 400(1), CPU 416-3 DP, S7 Program(1) and blocks
until you can see the block OB1. Double-click on OB1 and confirm the dialog with OK.
Enter the following STL program:
STL
Explanation
A I 514.0
If button 514.0 is active,
R C 0
set counter to 0
A I 512.0
If BERO 512.0 is active,
CU C 0
increment by 1
A I 513.0
If BERO 513.0 is active,
CD C 0
decrement by 1
AN C 0
Is counter = 0 ?
= Q 512.0
YES, then output 512.0 is active
L C 0
Load counter in ACCU
L 3
Load 3 in ACCU
>=I
Is counter => 3 ?
= Q 513.0
YES, then output 513.0 is active
<I
Is counter < 3 ?
= Q 514.0
Yes, then output 514.0 is active
Save the program with File > Save and download it to the CPU withPLC > Download.
2.11
Putting the Example into Operation
Commissioning
Turn on the power supply of the ET 200iSP.
Commissioning guideline
2.11 Putting the Example into Operation
ET 200iSP
Operating Instructions, 11/2017, A5E00247483-07
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