I tried to reset my Xbee S6B to default configuration by disconnecting from evaluation board, after this was connected DIN to GND, after this conected to my evaluation board and after this was given voltage by USB from laptop.
In this time power LED ( red ) is lighting and DIN LED ( green ) blinking. How I can to restore my Xbee module to command mode ? ( the “+++” command does not give OK ) ?
I tried to solve the problem with XCTU, but I can’t do it because my Xbee is connected to the Nucleo board via UART, and not directly to the USB port of the laptop
I am not surer you can. In order for the XBee to talk to XCTU, you need to have the DI and DO connected to the PC with the proper voltage levels. May I suggest you obtain a Digi interface board to work from. It will give you the ability to connect the radio to the PC and XCTU. It will also give you a known good point to work from.