Follow this procedure:
Go to http://support.flir.com and download FLIR GEV Demo from the downloads section.
Install FLIR GEV Demo.
Connect the camera to power and to the computer, typically via a PoE injector connected to the Ethernet cable.
Start FLIR GEV Demo.
In FLIR GEV Demo, click the Select/Connect button.
In the GEV Device Selection window, identify the camera using the MAC address (printed on the camera). Select the camera in the list and click the OK button.
If the device is not visible, check the box “Show unreachable Network Devices” and then select the correct device and press "Set IP Address…”. Then assign the correct IP address to your device.
FLIR GEV Demo can now be used to set up and control the camera. Click the Play button to start the image stream.