sicklms failed to initialized:failed to detect baud rate!

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Hi,

I got the same error trying to connect my Sick laser and I found no solution. I have a USB->RS422 converter and it works fine with all baud rates equal or less than 38400. When I set the baud rate to 500000, then a similar error message appears. I tried some commands from the tutorial "Using The Sick lms" (http://www.ros.org/wiki/sicktoolbox_wrapper/Tutorials/UsingTheSicklms):

rosparam set sicklms/port /dev/ttyUSB0

rosparam set sicklms/baud 5000000

and

stty -F /dev/ttyUSB0 500000

rosrun sicktoolbox_wrapper sicklms _port:=/dev/ttyUSB0 _baud:=500000

Please help me to configure ROS parameters or something else, I really need that baud speed to work. My Sick is LMS291-S05.

Thanks!

Natália.

Just a wild guess, but we needed to set the device to 500k manually like this:

setserial /dev/ttyS1 baud_base 500000 uart 16654

Other than that: "are you using the correct device path?" and what scanner is it?

RS-232 converter usb 2-1.2: FTDI USB Serial Device converter now attached to ttyUSB0.

it doesn't work with SICK2XX and pioneer robot on my ubuntu 12.04.

but - usb 1-1.2: ch341-uart converter now attached to ttyUSB1

it works fine. so, i guess problem with cable driver.

Try changing cable or finding appropriate driver.

During the initialization, the driver will try to auto detect the baud rate of the LIDAR(which stays the same as the last time it runs.) And as RS232 can do no more than 19200, may be you need to check with a RS422 connection.

Another thing is if you want your lidar to work at real-time, you definite need 500K baud rate.

Hey,

I am having the same problem with my SICK laser. I can get it to work perfectly when using a USB->RS232 adapter (but with many of the "A scan was probably missed") messages.

However, to operate faster, I am trying to connect using an RS422 interface. The ports are showing up under /dev/ttyUSB1, /dev/ttyUSB2 etc. But I cannot get the SICK to communicate through these ports.

Sven_007 - what do you mean by "set the interface of "/dev/ttyMXUSB0" to RS-422"??

I am setting _baud:=500000 and have set the permissions on the port correctly. However, i end up with the same error messages as the original post.

Any ideas much appreciated!

Thanks,

S