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Using static transform publisher within rgbdslam

I'm using rgbdslam (with kinect + freenect driver) to process octomaps which are currently somehow rotated round the x-axis and therefore giving me wrong occupancy grid maps when I try to save with map_saver. I tried to fix this with static_transform_publisher but don't know exactly how to use it. As far as I understood, this has to be added to the beginning of my openni/freenect+rgbdslam.launch - file:

<node pkg="tf" type="static_transform_publisher" name="link1_broadcaster" args="x y z yaw pitch roll frame_id child_frame_id period_in_ms"/>

What are the frame_id and child_frame_id?