Connect the PLC device and your computer with the USB cable. Open a project and upload it to the device. In order to watch the project you have uploaded in real time, select the "Online Monitoring" tab on the left side panel and press the "Start" button. A box will appear on all blocks showing their instantaneous values.
Another option is; You can read the instantaneous value of a single block by using the AT+FBD command in the microterminal application.