After modifier network connection, I can ping the address of the laser scanner. tienthanh@tienthanh-pc:~$ ping 169.254.193.164 PING 169.254.193.164 (169.254.193.164) 56(84) bytes of data. 64 bytes from 169.254.193.164: icmp_seq=1 ttl=64 time=0.025 ms 64 bytes from 169.254.193.164: icmp_seq=2 ttl=64 time=0.025 ms 64 bytes from 169.254.193.164: icmp_seq=3 ttl=64 time=0.027 ms 64 bytes from 169.254.193.164: icmp_seq=4 ttl=64 time=0.027 ms 64 bytes from 169.254.193.164: icmp_seq=5 ttl=64 time=0.027 ms 64 bytes from 169.254.193.164: icmp_seq=6 ttl=64 time=0.028 ms 64 bytes from 169.254.193.164: icmp_seq=7 ttl=64 time=0.027 ms 64 bytes from 169.254.193.164: icmp_seq=8 ttl=64 time=0.028 ms 64 bytes from 169.254.193.164: icmp_seq=9 ttl=64 time=0.027 ms 64 bytes from 169.254.193.164: icmp_seq=10 ttl=64 time=0.028 ms 64 bytes from 169.254.193.164: icmp_seq=11 ttl=64 time=0.027 ms ^C --- 169.254.193.164 ping statistics --- 11 packets transmitted, 11 received, 0% packet loss, time 9998ms rtt min/avg/max/mdev = 0.025/0.026/0.028/0.007 ms But I still got the error when run LMS100 tienthanh@tienthanh-pc:~$ rosrun LMS1xx LMS100 [ INFO] [1298911023.270612023]: connecting to laser at : 169.254.193.164 [ERROR] [1298911023.270972132]: Connection to device failed On Mon, Feb 28, 2011 at 3:39 PM, Tien Thanh wrote: > 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 > -- Tien Thanh Nguyen