Hi @mhg2000, welcome to the forum 
I believe your code is correct for setting the device to manual mode, but you’ll also want to send the set_range message to specify the distance range you want to limit the scans to
I’ve copied the contents of your text file into a code block, so the code is visible directly in the post. You can read more about that in the Formatting a Post/Comment section of the “How to Use the Blue Robotics Forums” post