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In the above output the host ip seems to be the same for both laser-scanners. Are you sure you are start the correct launch file ?

If I use two sick laser scanners the launch file would look like this:

    <launch>
    <node pkg="sick_tim5xx" type="sick_tim5xx_node" name="laser_node" respawn="true">
name="laser_node_right">
    <param name="frame_id" value="laser_link" value="laser_link_right" />
    <param name="host" value="192.168.30.10"/>
    <param name="topic_id" value="/fmSensors/scan" value="/fmSensors/scan_right" />
    <param name="invert_output" value="true" />
    <param name="min_usable_angle" value="-2.35619449" />
    <param name="max_usable_angle" value="2.35619449" />
    </node>

    <node pkg="sick_tim5xx" type="sick_tim5xx_node" output="screen" name="laser_node_left">
    <param name="frame_id" value="laser_link_left" />
    <param name="host" value="192.168.30.11"/>
    <param name="topic_id" value="/fmSensors/scan_left" />
    <param name="invert_output" value="true" />
    <param name="min_usable_angle" value="-2.35619449" />
    <param name="max_usable_angle" value="2.35619449" />
    </node>
    </launch>

In the above output the host ip seems to be the same for both laser-scanners. Are you sure you are start the correct launch file ?

If I use two sick laser scanners the launch file would look like this:

    <launch>
    <node pkg="sick_tim5xx" type="sick_tim5xx_node" name="laser_node_right">
    <param name="frame_id" value="laser_link_right" />
    <param name="host" value="192.168.30.10"/>
    <param name="topic_id" value="/fmSensors/scan_right" />
    <param name="invert_output" value="true" />
    <param name="min_usable_angle" value="-2.35619449" />
    <param name="max_usable_angle" value="2.35619449" />
    </node>

    <node pkg="sick_tim5xx" type="sick_tim5xx_node" name="laser_node_left">
    <param name="frame_id" value="laser_link_left" />
    <param name="host" value="192.168.30.11"/>
    <param name="topic_id" value="/fmSensors/scan_left" />
    <param name="min_usable_angle" value="-2.35619449" />
    <param name="max_usable_angle" value="2.35619449" />
    </node>
    </launch>