Real-Time targets can be in safe mode for a number of reasons, including:
- user forced software safe mode (via NI MAX)
- user forced hardware safe mode (via DIP switches)
- there is no software installed on the CompactRIO controller
- the CompactRIO has crashed a number of times and has then booted into safe mode
It is always recommended to install software to the Real-Time Targets via a direct cable connection. This can be USB or Ethernet. This protects the integrity of the installation.
Also you can try using a different USB port on PC or reseat the cable on both ends in order to ensure connection is good.