Function Block (FB)/Function (FC)

Riche Robledo · Dec 17, 2012

To all...

I know how to make a sequence logic using ladder diagram for S7 300/400 and I could simulate it using by S7 Simulator. I would like to try to simulate the logic with Function Block or Function to convince myself that I could do it.But I have never done to simulate the logic with Function Block or Function.

My question is;

1.Is it possible to simulate the logic with Function Block/Function using S7 simulator only?
2.How I can prove myself that the logic I made with FB/FC will work?
3.Is there other way to simulate it even without real PLC modules?

Respectfully yours;
RR

I love sequence control

PeterW · Dec 17, 2012

Riche Robledo said:
To all...

I know how to make a sequence logic using ladder diagram for S7 300/400 and I could simulate it using by S7 Simulator. I would like to try to simulate the logic with Function Block or Function to convince myself that I could do it.But I have never done to simulate the logic with Function Block or Function.

My question is;

1.Is it possible to simulate the logic with Function Block/Function using S7 simulator only?
2.How I can prove myself that the logic I made with FB/FC will work?
3.Is there other way to simulate it even without real PLC modules?

Respectfully yours;
RR

I love sequence control

One question.

You say you simulated code? where was this code if not in an FC or FB?

Riche Robledo · Dec 17, 2012

Sir peter;

If I make sequence logic for function block how I can simulate it using S7 simulator? Is it possible?
If I make also sequence for Function how I can simulate it too using S7 simulator? Is it possible?

I dont have PLC modules (S7 300/400) but I have only Simatic Manager with S7 Simulator.I want to try only the logic I will make if it works or not.

Respectfully yours;
RR
I love sequence control..

L D[AR2P#0.0] · Dec 17, 2012

Yes, you can simulate your process and test your sequence. Call your process simulation block at the start of OB1 where you can write to the inputs. If you have analogues not in the process image then you will have to read them from a db or mw when simulating as you cannot write to a PIW.

Riche Robledo · Dec 18, 2012

L D[AR2 said:
Yes, you can simulate your process and test your sequence.Call your process simulation block at the start of OB1 where you can write to the inputs. If you have analogues not in the process image then you will have to read them from a db or mw when simulating as you cannot write to a PIW.

Sir L D;

I called the function block into the OB1 to process and simulate by S7-PLCSIM simulator but when I download it, the SF lit indicator will lit and the CPU run will not activate. Have I any mis-understanding how to process the simulation block from OB1 using S7-PLCSIM?

Please let me know because i am new PLC's enthusiasm.

Respectfully;
RR

L D[AR2P#0.0] · Dec 18, 2012

The diagnostic buffer will tell you why the CPU has gone into stop.

(Cntrl+D from Simatic manager with blocks folder highlighted)

Rafal Walczak · Dec 18, 2012

You probably didnt load OB121 and OB122 so you PLC go Stop

KalleOlsen · Dec 18, 2012

Riche Robledo said:
... the SF lit indicator will lit and the CPU run will not activate. ...

Obviously you need much more basic knowlege about Step7.
You must spend some hours reading the documents you will find liks to here:

http://www.plctalk.net/qanda/showpost.php?p=516247&postcount=5

Kalle

cy429 · Dec 18, 2012

hello, try to set the pg pc. to plcsim ..try to go on hardware config,save and compile ..

Riche Robledo · Dec 21, 2012

To all,

Thank you so much for sharing your knowledge, now i know how to simulate the FB/FC into the S7PLCsim....

Advance Merry Christmas!!!
RR

Function Block (FB)/Function (FC)

Riche Robledo

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PeterW

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Riche Robledo

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L D[AR2P#0.0]

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Riche Robledo

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L D[AR2P#0.0]

Lifetime Supporting Member

Rafal Walczak

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KalleOlsen

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cy429

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Riche Robledo

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