From the Navigation menu in the Web Client, click on Configuration and then click on Hardware Manager to access the module.
Select a Driver from left side menu that you want to add the controller to, and then click Add/Delete button on the top left side and then click on Add Controller.
Please note that the Add Controller window should display the driver that you want to add controller to, like "Add Controller To Driver 1".
Select the Controller Group that the controller is to be added to, Controller Type from the drop-down controller list, Select Controller Address from the list, type a description for that controller in Description field and then click on +Add Controller button.
After the new controller is added, change/modify the configuration fields below in controller properties;
Connection Type: Network (IP Client)
Channel Baud Rate: 38400
Channel Port: 3001 (This is the default TCP port for mercury hardware)
MAC Address: Type the MAC address of the controller.