Connecting the cRIO-904x to the Host Computer or
Network Using Ethernet
Complete the following steps to connect the cRIO-904x to a host computer or Ethernet
network using the RJ-45 Gigabit Ethernet port 0. NI recommends using the RJ-45 Gigabit
Ethernet port 0 for communication with deployed systems.
Note You can configure the RJ-45 Gigabit Ethernet port 1 in Measurement &
Automation Explorer (MAX) under the Network Settings tab.
1. Power on the host computer or Ethernet hub.
2. Connect the RJ-45 Gigabit Ethernet port 0 on the cRIO-904x to the host computer or
Ethernet hub using a standard Category 5 (CAT-5) or better shielded, twisted-pair
Ethernet cable.
Notice To prevent data loss and to maintain the integrity of your Ethernet
installation, do not use a cable longer than 100 m (328 ft).
The cRIO-904x attempts to initiate a DHCP network connection the first time you
connect using Ethernet. The cRIO-904x connects to the network with a link-local IP
address with the form 169.254.x.x if it is unable to initiate a DHCP connection.
Finding the cRIO-904x on the Network (DHCP)
Complete the following steps to find the cRIO-904x on a network using DHCP.
1. Disable secondary network interfaces on the host computer, such as a wireless access
card on a laptop.
2. Ensure that any anti-virus and firewall software running on the host computer allows
connections to the host computer.
Note MAX uses UDP on port 44525. Refer to the documentation of your
firewall software for information about configuring the firewall to allow
communication through this port.
3. Launch MAX on the host computer.
4. Expand Remote Systems in the configuration tree and locate your system.
Tip MAX lists the system under the model number followed by the serial
number, such as NI-cRIO-904x-1856AAA.
Tip If you do not see the cRIO-904x under Remote Systems, use the
Troubleshoot Remote System Discovery utility to walk through
troubleshooting steps.
Configuring Startup Options
Complete the following steps to configure the cRIO-904x startup options in MAX.
1. In MAX, expand your system under Remote Systems.
2. Select the Startup Settings tab to configure the startup settings.
4 | ni.com | cRIO-904x User Manual
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