I am trying to check Modbus communication using Simulation.

But values are not updating during Simulation (version 12) on my laptop(Windows 10, i5, 12GB RAM).

IP address series also kept same. i.e. 192.168.1.100(laptop) and 192.168.1.104 (TCP port Connection)

If I keep IP address as 127.0.0.1 as shown in Tutorial videos, then simulation works and values are updated for Modbus.

Also I am using this software for first time. So not fully aware of UI and functionality of software.

If anyone has links or some documents related to communication/driver, let me know.

Any reason why it is not working ?

Before troubleshooting anything to do with VTScada, ensure that port 502 is open on 192.168.1.104 on your network.