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With the Hokuyo UTM-30LX-EW connected through ethernet, you can use the urg_node, setting the ip_address parameter value. Default factory Hokuyos come with IP 192.168.0.10.

With the Hokuyo UTM-30LX-EW connected through ethernet, you can use the urg_node, setting the ip_address parameter value. Default factory Hokuyos come with IP 192.168.0.10.

rosrun urg_node urg_node _ip_address:=192.168.0.10

With the Hokuyo UTM-30LX-EW connected through ethernet, you can use the urg_node, setting the ip_address parameter value. Default factory Hokuyos come with IP 192.168.0.10.

rosrun urg_node urg_node _ip_address:=192.168.0.10

ping 192.168.0.10

With the Hokuyo UTM-30LX-EW connected through ethernet, you can use the urg_node, setting the ip_address parameter value. Default factory Hokuyos come with IP 192.168.0.10.

rosrun urg_node urg_node _ip_address:=192.168.0.10

-- Edit 1:

PC and laser must be on the same net 192.168.0.XX. Then, you should be able to ping the laser first,

ping 192.168.0.10

-- Edit 2:

If it does not work on a PC with IP 192.168.0.XX, maybe your Hokuyo laser has a different IP address.

To be sure, you can reset the laser IP address to the default one (192.168.0.10), following the instructions from the Laser specification (last page, section 9 - Ethernet settings - IP Initialization ), provided at the Hokuyo webpage.