Using PLC X20CP1382 & HMI 6PPT30.101G-20B & 6PPT30.0702-20W in my project.
added two HMI hardware configuration in my AS project & added two separate two Visualization project, one for 6PPT30.101G-20B HMI another visualization project for 6PPT30.0702-20W HMI.
We want to connect two HMI to X20CP1382 PLC IF2 ETH port one by one.
But only one HMI project screens appeared in both HMI.
You are using VC4 visualization, T30 has VNC client for that. So you have to basically configure 2 VNC server instances, one for each visualization and use unique port for each of them.
Do you mean, you would like to have information on PLC side that T30 is connected? If so, for this you have to enable OPCUA server on T30 side, add T30 to your project and use I/O datapoint.