@Henry

Please also check when you press the MD button, does the green LED turn ON?

@henry

I have went through the process here to set the baudrate and parity as you have shown and can get it working. I am thinking maybe this is related to the firmware inside the BP sensor. Please double check your frimware version; it should be 1.06 or later. You can check it by checking register 121:

If it is not, please follow the instructions from this page and see if the problem gets resolved.

https://docs.tibbo.com/bp_updating_firmware

Hello,

The commands look correct. If you refer to the documentation for the BP sensors, you will note that these two registers has the property of R/Wp. This means that it is write-protected. You will need to hold down the MD button on the BP sensor when you issue the commands for it to work.

https://docs.tibbo.com/bp_registers