Omron multi sensors

edit

i want to use 2 omron laser scanners but the following code doesn't work:

<launch> 
<node ns="first" pkg="omron_os32c_driver" type="omron_os32c_node" name="omron_os32c_node"> 
<param name="host" value="192.162.0.10"/> 
<param name="frame_id" value="laser1"/> 
<param name="start_angle" value="1.0471975512" /> 
<param name="end_angle" value="-1.0471975512" /> 
<remap from="scan" to="scan1">
</node> 
<node ns="second" pkg="omron_os32c_driver" type="omron_os32c_node" name="omron_os32c_node_2"> 
<param name="host" value="192.162.0.11"/> 
<param name="frame_id" value="laser2"/> 
<param name="start_angle" value="1.0471975512" /> 
<param name="end_angle" value="-1.0471975512" /> 
<remap from="scan" to="scan2">
</node>
</launch>

have someone an idea how launch 2 same node simultaneously? thanks.

Edit:

started roslaunch server http://localhost:57492/

SUMMARY
========

PARAMETERS
 * /first/omron_os32c_node/end_angle: -1.0471975512
 * /first/omron_os32c_node/frame_id: middle_torso_b_ba...
 * /first/omron_os32c_node/host: 192.168.0.10
 * /first/omron_os32c_node/start_angle: 1.0471975512
 * /rosdistro: indigo
 * /rosversion: 1.11.10
 * /second/omron_os32c_node_2/end_angle: -1.0471975512
 * /second/omron_os32c_node_2/frame_id2: middle_torso_a_ba...
 * /second/omron_os32c_node_2/host: 192.168.0.11
 * /second/omron_os32c_node_2/start_angle: 1.0471975512

NODES
  /first/
    omron_os32c_node (omron_os32c_driver/omron_os32c_node)
  /second/
    omron_os32c_node_2 (omron_os32c_driver/omron_os32c_node)

auto-starting new master
process[master]: started with pid [13686]
ROS_MASTER_URI=http://localhost:11311

setting /run_id to 1663060e-f667-11e5-bb4c-00187d98c03c
process[rosout-1]: started with pid [13699]
started core service [/rosout]
process[first/omron_os32c_node-2]: started with pid [13716]
process[second/omron_os32c_node_2-3]: started with pid [13735]
[FATAL] [1459335832.918327894]: Exception caught opening session: bind
[second/omron_os32c_node_2-3] process has died [pid 13735, exit code 255, cmd /opt/ros/indigo/lib/omron_os32c_driver/omron_os32c_node scan:=scana __name:=omron_os32c_node_2 __log:=/home/omni/.ros/log/1663060e-f667-11e5-bb4c-00187d98c03c/second-omron_os32c_node_2-3.log].
log file: /home/omni/.ros/log/1663060e-f667-11e5-bb4c-00187d98c03c/second-omron_os32c_node_2-3*.log