Connect eRIO 9149 to PXIe 8840 controller

[r_good]

I am trying to use an ethernet RIO extension chassis with a PXIe 8840 RT controller, and I can not seem to get the two to connect.  I have configured both IPs on the same subnet in MAX, and I can connect individually to them through MAX.  But when I try to use the second ethernet port on the PXIe to connect to the 9149, I get error -63040 "A connection could not be established to the specified remote device."  

I have used this chassis before but with a Windows computer, not with a RT Controller.  I tried using a standard Cat 5 cable, a Cat 5 crossover cable (listed in the bottom of the KB page about this subject), and putting a switch in-between the two, and each time I have gotten the same error.

Any Ideas?

[abalma21 · Accepted solution]

Hi,

This Knowledge Base article gives a good description of what you can do with the second Ethernet port on a Real-Time Controller.

In order to use both Ethernet ports on a dual port controller, you must configure Ethernet Port 2 with a static IP address which resides in a different subnet than Ethernet port 1. Ethernet port 2 can be used to communicate with a private network.

You can also configure the Ethernet Port 2 for EtherCAT communication but you will need to install the EtherCAT driver in your host computer and your RT controller.

You will need to connect the Ethernet port 1 of your PXIe 8840 RT controller, your NI 9149 Ethernet Expansion Chasis and your host computer to the same LAN (using a switch or a router) to configure these target in MAX as well as deploying applications to these targets from LabVIEW instead of connecting the NI 9149 to the Ethernet port 2 of your PXIe 8840 RT controller.

Warm Regards,

Alejandro Balma

[r_good]

Alejandro,

Thank you for the KB, I had over looked the subnet requirements.  After configuring the eRIO and RT eth1 ports to be on a different subnet, the two were able to connect.  

Thanks for your help,

Ryan