Hi, Thanks, I got ID address of LMS111 from SOPAS software is 169.254.193.164. But I can't ping it after connect it to my PC tienthanh@tienthanh-pc:~$ ping 169.254.193.164 PING 169.254.193.164 (169.254.193.164) 56(84) bytes of data. ^C --- 169.254.193.164 ping statistics --- 57 packets transmitted, 0 received, 100% packet loss, time 56079ms Of course, it can not connect to ROS tienthanh@tienthanh-pc:~$ rosrun LMS1xx LMS100 [ INFO] [1298902851.829334744]: connecting to laser at : 169.254.193.164 [ERROR] [1298902872.821389656]: Connection to device failed I don't think there is any problem with a laser scanner (it works with Labview in Window). And I have no idea why it not works in ROS Cheers, On Mon, Feb 28, 2011 at 11:59 AM, Jochen Sprickerhof < ros-users@jochen.sprickerhof.de> wrote: > * Tien Thanh [2011-02-28 11:44]: > > Hi, > > Hi, > > > After connect laser scanner, I can ping it, and this is my ifconfig > > tienthanh@tienthanh-pc:~$ ifconfig > > eth0 Link encap:Ethernet HWaddr e0:cb:4e:da:d2:71 > > inet addr:10.33.107.93 Bcast:10.33.107.255 Mask:255.255.252.0 > > inet6 addr: fe80::e2cb:4eff:feda:d271/64 Scope:Link > > UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 > > RX packets:235218 errors:0 dropped:0 overruns:0 frame:0 > > TX packets:28801 errors:0 dropped:0 overruns:0 carrier:0 > > collisions:0 txqueuelen:1000 > > RX bytes:91400508 (91.4 MB) TX bytes:3659091 (3.6 MB) > > Interrupt:28 Base address:0x6000 > > > > I set the IP: rosparam set /LMS1xx/host 10.33.107.93 > > you have to use the IP of the LMS100, not the one of your host ;) > > Cheers, > > Jochen > -- Tien Thanh Nguyen Erasmus Mundus Master Program EU4M - European Union Master in Mechatronics and Micro-mechatronics systems Hochschule Karlsruhe Technik und Wirtschaft - Germany Ecole Nationale Superieure de Mecanique et de Microtechniques de Besancon - France Phone-mobile : +32.(0)499239087 http://www.eu4m.eu