Automation virtual commissioning : PLCSIM advanced 2.0 with C#

This is is a short demonstration of a co-simulation between Siemens PLCSIM Advanced and C#.
The goal is simple : have the ability to conditionally change inputs.
We’ll do a proof of concept with a small exemple for a safety relay monitored by a feedback.  

Co-simulation : PLCSIM Advanced with C#

1 Configuration

We’ll run the simulator and the editor on two computers :

Simulation configuration

2 Simulator configuration

First let’s start an instance with the following parameters : 

Instance parameters for PLCSIM advanced

Once started, it should be like that :

Simulation running

3 PLC Programming 

3.1 Hardware configuration

Let’s do a simple configuration as follow :

Project hardware configuration

Network configuration : 
– PLC_1 :
– IO device_1 :

Note : On the simulator, we have different IP addresses for all the network interfaces : Ethernet adapter, PLCSIM virtual ethernet adapter, PLC and I/Os !

With the following I/Os :

Remote I/Os configuration

Note that you’ll need to activate this option in the project settings :

Support simulation during block compilation option

3.2 Program

Our program will be very simple !

OB1 will toggle a bit every second :

And FB1 will do a safety check between the relay output and the input feedback :

3.3 Compiling and loading 

You should be able to compile and load :

4 Simulation

As soon as you’ll run the program, you should have an error on the feedback monitoring :

5 C# Co-simulation

To solve this issue, we’ll running co-simulation with C#. The script will check the output value (%Q9.0) and set the feedback (%I0.0) accordingly. 
We’ll be using sharpdevelop as IDE.

5.1 Import DLL

Importing the DLL is easy :

Then we write a short program :

And run it :

Once acknowledged, we should not have any issue. 

Using the trace tool, we can confirm that it’s running perfectly fine, updating the input in around 100ms.

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