PlcSim->NetToPLcSim->SimaticNET.OPC connection

Please set the PG/PC interface on the machine with the OPC server to the correct network interface, and not PC internal.

If this does not help, next test: To test if there are no firewall / port-blocking issues, you can use telnet as simple test tool. On the machine with the OPC server, open a command line, and enter:

C:\>telnet 192.168.1.3 102

This tries to open a connection on TCP port 102 to IP 192.168.1.3. If the connect was successful, the screen will go blank with a blinking cursor. If you stop Nettoplcsim, then you should receive an connection error.

There must be something wrong with your PC-station setup. The connection to Plcsim/Nettoplcsim seems to be Ok.

What status do you see in the station configuration editor on the PC station? You need at least the modules "IE general" and "OPC server". Both modules must be in RUN state.
 If not, then take a look into the diagnostics tab for relevant events.

If you can't fix this, make a screenshot of the offline configuration (Step 7), the station configuration editor and the diagnostics tab. and attach it here.

Have you tried to connect to the COM-server instead of OPC-UA in the OPC scout?

Hi,

in your NetPro screenshot I can see, that in the S7 connection the PLC is the active partner. This does not work with Nettplcsim, as Nettoplcsim can only act as a passive partner. It is also unusual to do this in this direction, because the PC station wants to get access to services in the PLC, so I select this partner to initiate the connection. Nevertheless, with a real S7 Plc this may work, but I have never used it.

Thus, delete the S7 connection, then select the PC station (WIN-..) and add the S7 connection from this station. On the PC station you should see on this connection in the PC station "Active connection" = Yes, and on PLC side "No".

Then compile download the PC station from NetPro, and also reload the Plc/Plcsim.

Hopefully it should work now.

Thanks alot for your help. now everything works as it should ;))

Thanks for the tutorial!

But i'm trying to follow all steps, but i can't download the program to plcsim.

When i click to download a message appear:

"Over which station address is the programming device connected to the module CP 343-1?"

I set the IP which is the same at machine and a another message appear:

"The connection to the target module cannot be estabilished".

What i'm doing wrong?

Thanks a lot!

I changed to a CPU with integrated Ethernet Port (Like CPU 314C-2 PN/DP) and i could make the download.

I completed all other steps, but when i open the opc client, doesn't appear any tag. The SYM folder is empty.

I open the nettoplcsim monitor and the station pc doesn't make data aks.

If a open NetPro in Station PC and Click in CPU 314, appear the message above in nettoplcsim monitor:

That is, the communication is working, but the opc server does not request the data, right?

Whats wrong?

Thanks a lot!

The OPC-Server requests only data when there is an active OPC Client who requests the data from this station. You can use the Simatic Net OPC Scout as client for testing.

Have you downloaded the PC station configuration from NetPro?

If want to run Step7, PC-Station with Simatic Net OPC server and Plcsim/Nettoplcsim on the same machine, I think this won't work, as the Simatic.Net OPC server does not accept his own IP address as Plc address as destination.