# Connect to Prosys Simulation Server

Developed by Prosys, the Prosys Simulation Server is a sophisticated OPC UA server that serves to replicate the behaviors of OPC UA devices and systems. 

To establish a seamless connection with the Prosys Simulation Server using Neuron's OPC UA plugin, it's essential first to switch the Prosys Simulation Server to Expert Mode. This can be done by selecting **Options** -> **Switch to Expert Mode** from the menu.

## Anonymous Login

1. Open the **Endpoints** -> **Security Modes**, deselect **Sign** and **Sign&Encrypt**, and select **None**.
    ![prosys-1](./assets/prosys-1.jpg)
2. Open the **Users** -> **User Authentication Methods**, deselect **Username&Password**, **Certificate** and **IssuedToken/External System**, and select **Anonymous**.
    ![prosys-2](./assets/prosys-2.jpg)
3. Save the settings and restart the Prosys OPC UA Simulation Server.

## Configure Neuron

1. Get the PLC measurement point information via the UaExpert software, refer to [UaExpert](./uaexpert.md).
1. Neuron adds a new southbound OPC UA device, opens **Device Configuration**, fills in the **Endpoint URL** of the target Server, without filling in username/password, without adding certificate/key, and starts the device connection.
1. Add **Groups** and **Tags** based on the measurement point information.

## Certificate/Key + Anonymous Login

1. Refer to [Connection policy](./policy.md) to generate or convert a certificate/key.
2. Open the **Endpoints** -> **Security Modes**, deselect **None**, and select **Sign** and **Sign&Encrypt**.
3. Open the **Users** -> **User Authentication Methods**, deselect **Username&Password**, **Certificate** and **IssuedToken/External System**, and select **Anonymous**.
4. Save the settings and restart the Prosys OPC UA Simulation Server.

## Configure Neuron

1. Get the PLC measurement point information via the UaExpert software, refer to [UaExpert](./uaexpert.md).
2. Neuron adds a new southbound OPC UA device, opens **Device Configuration**, fills in the **Endpoint URL** of the target Server, does not need to fill in the username/password, adds the certificate/key and starts the device connection.
3. Open the **Certificates** and set the client certificate in the list to Trust.
    ![prosys-3](./assets/prosys-3.jpg)

4. Add **Groups** and **Tags** based on the measurement point information.

## Username/Password Login

1. Open the **Endpoints** -> **Security Modes**, deselect **None**, and select **Sign** and **Sign&Encrypt**.

2. Open the **Users** -> **User Authentication Methods**, deselect **Anonymous**, **Certificate** and **IssuedToken/External System**, and select **Username&Password** to add a custom username/password.
    ![prosys-4](./assets/prosys-4.jpg)

3. Save the settings and restart the Prosys OPC UA Simulation Server.

## Configure Neuron

1. Get the PLC measurement point information via the UaExpert software, refer to [UaExpert](./uaexpert.md).
2. Neuron adds a new southbound OPC UA device, opens **Device Configuration**, fills in the **Endpoint URL** of the target Server, fills in the user name/password, no need to add certificate/key, and starts the device connection.
3. Open the **Certificates** and set the client certificate in the list to Trust.


4. Add **Groups** and **Tags** based on the measurement point information.

## Certificate/Key + Username/Password Login

You can refer to the above sections on how to set the Certificate/Key and Username/Password

- [Certificate/Key](#certificate-key-anonymous-login)
- [Username/Password](#username-password-login)

## Configure Neuron

1. Get the PLC measurement point information via the UaExpert software, refer to [UaExpert](./uaexpert.md).

   ![prosys-5](./assets/prosys-5.jpg)

2. Neuron adds a new southbound OPC UA device, opens **Device Configuration**, fills in the **Endpoint URL** of the target Server, fills in the user name/password, adds the certificate/key, and starts the device connection(Change the **Update Mode** to Subscribe or Read&Subscribe to obtain data via OPC UA subscription.).

3. Open the **Certificates** and set the client certificate in the list to Trust.

4. Add **Groups** and **Tags** based on the measurement point information.

## Test Data List

|  Name    |  Address  | Attribute | Data Type  |
| -------- | ------ | ---- | ------ |
| Counter  | 3!1001 | Read | INT32  |
| Random   | 3!1002 | Read | DOUBLE |
| Sawtooth | 3!1003 | Read | DOUBLE |
| Sinusoid | 3!1004 | Read | DOUBLE |
| Square   | 3!1005 | Read | DOUBLE |
| Triangle | 3!1006 | Read | DOUBLE |