Interested in the original version from Barry Barnreiter? Go here. The procedure described here allow us to integrate OpenOPC 1.2.0 with recent versions of Python (v3.7+) and Pyro4 (v4.80+) installed on Windows.
Kepware simulation kepserverex windows#
Also, includes a Windows gateway service that enable non-Windows clients to also access OPC-DA calls. OpenOPC for Python is a free, open source and easy to use OPC (OLE for Process Control) library that works very well with the popular Python programming language (now, version 3.7) on Windows. It’s possible to use it from learning how the OPC DA protocol actually works to connecting to multiple servers and building applications for deeper data integration. But this error keeps popping up.OpenOPC and Python 3.7 on Windows is the right setup when working with certain industrial automation projects that implement industry-tested OPC DA servers. Opcua.ua.uaerrors._auto.BadInvalidArgument: One or more arguments are invalid.(BadInvalidArgument)įIrst of all, it seems like "UaStatusCodeError(self.value)" is a result given by Kepware, correct? I have checked and rechecked certificates, username, password,etc. name)įile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\client\ua_client.py", line 93, in check_answerįile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\ua\uatypes.py", line 231, in check
![kepware simulation kepserverex kepware simulation kepserverex](https://www.bytebang.at/download/Blog/Optimizing+the+MQTT+topic+structure+of+the+KEPServerEx/mosquitto_result.png)
Self.check_answer(data, " in response to " + request. Return _session(params)įile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\client\ua_client.py", line 289, in activate_sessionĭata = self._nd_request(request)įile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\client\ua_client.py", line 84, in send_request Self.activate_session(username=self._username, password=self._password, certificate=er_certificate)įile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\client\client.py", line 422, in activate_session WARNING:_client.Socket:ServiceFault from server received in response to ActivateSessionRequestįile "D:/Trabajo/microred_abb/python_files/OPCUA_client_for_kepware.py", line 61, inįile "D:\Trabajo\microred_abb\python_files\venv\lib\site-packages\opcua\client\client.py", line 264, in connect Path_private_key = "private_key_example.pem"Ĭt_security_string("Basic256Sha256,SignAndEncrypt," + path_client_cert +"," + path_private_key + "," + path_server_cert + "")Ĭlient.application_uri = "" #self-signed certificate generated a "" URI
Kepware simulation kepserverex code#
My python code is similar to the example "client-with-encryption.py" except that I also take into consideration the server certificate. Problem: everything worked with "Basic128Rsa15" and "Basic256" protocols but I struggle to obtain communication using 256Sha256. The kepware server is user protected with password.I exported my kepware server certificate (.der) so that it can be imported in my client (python).I generated my client self-signed certificate (.der) and its private key (.pem) and imported the certificate in the trusted client list of my kepware server.I am now struggling to get secure 256Sha256 communication. I started by confirming connection without any security policy, went on with basic 128Rsa15 and then Basic256.
![kepware simulation kepserverex kepware simulation kepserverex](https://i.ytimg.com/vi/5qykRpiJ0IU/maxresdefault.jpg)
I am currently implementing a secure communication (Basic256Sha256) between my opcua client (python code) and server (KEPServerEX 6).