MB2HAL error

Make sure that the user has access (rights) to /dev/ttyUSB0

1.) Verify with "ls -lFA /dev/ttyUSB0" (read write rights)
2.) If not done already, add your user to the dialout group -> "sudo usermod -a -G dialout $USER"
3.) Use a tool like ModPoll to verify that all communication is working before you move on to LinuxCNC
4.) Verify wiring (+ to + / - to -), Slave-ID, Baud Rate / Bits / Parity etc. I would start with 9600 8N1

www.modbusdriver.com/downloads/modpoll.tgz

ModPoll Example:

modpoll -b 9600 -p none -a 1 -m rtu -r 32768 -c 10 /dev/ttyUSB0

Once that is working move on to LinuxCNC. Change debug=3 for MB2HAL and each transaction to get more debug information.

At first ty for the hints.
Im gonna check this out and give response later.

I tested the settings with Modpoll and I am a little confused about my VFD. My VFD is not responding to Modpoll. In the pictures I marked the setting from the manual for Modbus and the current setting for Modbus on the VFD. A screenshot is from Modpoll. Maybe some have a Powtran or Sourcetronic and can send me a setup that works with Modbus for comparison.I can use the USB cable from the manufacturer to make settings from a PC with software purchased from the manufacturer. So the cable should drop out as an error.As soon as I have solved this problem, I will report how the setup in the HAL continued. Merry Christmas

You are running on wrong speed use 6006 ( modbus is on last digit)
Mike

P. S.
2 ms wait could be a bit short to. If you get some tines errors try to increase that time

I'm gettin ahead.At first i changed baud rate (thx to mike for that hint) then I got connected but gettin a checksum error.Trying out change decimal from 4097 described in the manual to 4098 I got the frequency displayed in modpull .Frequency changes are shown in Terminal if i turn pots on VFD. I have to add all the decimal numbers I need by 1 digit for whatever reason it works(linuxcnc start counting decimal 0 or 1?)Just wonder whats wrong here. I still get a loop error when I call mb2hal.ini in hal terminal.


log file from loop error

Looks like halrun/mb2hal is missing write rights to /dev/ttyUSB0
modpoll works because you're running it as sudo.