PV800_USB host port

[Bhuvan_988 0]

Dear all,

 

I have AB PV 800 HMI. I am trying to connect a USB hub to USB host port and then connect a BT USB Keyboard and a USB Pendrive. But I see BT USB keyboard stops working whenever I turn off the HMI. Can anyone help on this?

Let me know if you need more data.

[BobLfoot 301]

I suspect your usb hub is passive and not active.  This means the usb power for the keyboard comes from the hmi.