National Instruments NI 9853 - Manual (Page 16)

NI 9853 Operating Instructions 16 ni.com
Sleep Mode (CompactRIO Only)
You can enable sleep mode for the CompactRIO system in
software. In sleep mode, the system consumes less power and may
dissipate less heat. Typically, when a system is in sleep mode, you
cannot communicate with the modules. Refer to the
Specifications
section for more information about power consumption and
thermal dissipation.
This system sleep mode should not be confused with the NI 9853
Transceiver Mode Sleep property, which sets only the CAN port to
sleep mode. Refer to the FPGA Module topic in LabVIEW Help for
more information on the Transceiver Mode property.