Reading the Temperature of a CompactRIO Chassis or a Single-Board RIO Device (FPGA Interface)

The cRIO-910x Reconfigurable Embedded chassis, the cRIO-9072/9074 Integrated controller and chassis, and the Single-Board RIO (sbRIO) devices have an onboard temperature sensor. Complete the following steps to read the temperature of the chassis or device.

1. Configure the CompactRIO or sbRIO system.
2. Make sure the Chassis Temperature I/O item is added to the system.
3. Right-click the FPGA target in the Project Explorer window and select New»VI from the shortcut menu to add a new VI to the system.
4. Place an FPGA I/O Node on the block diagram of the VI.
5. Click the element section of the FPGA I/O Node and select Chassis I/O (or Onboard I/O)»Chassis Temperature from the shortcut menu.
6. Right-click the Chassis Temperature output of the FPGA I/O Node and select Create»Indicator from the shortcut menu.

The Chassis Temperature output returns 16-bit values for the temperature. You can convert this value into meaningful engineering units.