How to run same pakcage twice at the same time?

Question

Hi im currently running the sicktoolbox_wrapper package for the LMS200 for scanning purpose I have two LMS200 and would like to use them at the same time I know the connecting port which are ttyUSB0 and ttyUSB1

lets say im running in port ttyUSB0 when i execute the command of

rosparam set /sicklms/port /dev/ttyUSB1 rosrun sicktoolbox_wrapper sicklms

the old one is killed because of

[new node registered with the same name]

is there any possible way to change the node name before executing it? or is it possible to copy and paste then reinstall the same package with a different and publishing a different node name?

I am trying rosparam set but have not found a clue yet plx help

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Originally posted by fcl21 on ROS Answers with karma: 1 on 2014-04-11

Post score: 0

Answer 1

See this answer, it shows how to set the node name both from the command line and from launch files.

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Originally posted by Stefan Kohlbrecher with karma: 24361 on 2014-04-11

This answer was ACCEPTED on the original site

Post score: 1

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Original comments

Comment by fcl21 on 2014-04-11:
let me make it clear if i execute rosrun sicktoolbox_wrapper sicklms __name:=sicklms it is executable but doesnt change anything

if i execute this rosrun sicktoolbox_wrapper sicklms __name:=sicklms2 i have [ERROR] [1397226096.240203952]: Initialize failed! are you using the correct device path? :/

Comment by fcl21 on 2014-04-11:
i just found that if i do

rosrun sicktoolbox_wrapper sicklms __name:=sicklms2

it says attempting to open devic @ /dev/lms200 which is a path that i never told the computer to do

Comment by demmeln on 2014-04-11:
This is probably the default value. You will need to set the parameter rosparam set /sicklms2/port /dev/ttyUSB1 when you run rosrun sicktoolbox_wrapper sicklms __name:=sicklms2. It is probably best if you create a launch file for your nodes.