Vmb2bl problem

English
1

I have only connected vmb2bl to check it since it is not recognized.
1-adresse is set correctly D9
2-all direct push buttons works properly

when connected to velbuslink it says: communications error and in log file BUFFER FULL(0B) DELAY +6000
Have been sent for an update to velbus 5 years ago and never tested or used (spare part)

any clue or hint?

2

Have you tried removing the power to the USB module for about 10 seconds?
If that doesn’t work, also try to disconnect and reconnect the USB-cable (and try a few different ports on the PC).

3

Maybe a related problem.

I had a strange problem with a VMB1USB board, where after a couple of months of working happily, it would just churn out mindless garbage to the computer.

The only solution was to remove the 12v supply for a few seconds.

(It’s on my shelf as a spare part, but I promise I’ll connect it back up and report the error, when I get time)

4

all of the above didnt work

5

I would try different combinations to see where the error lies:

  • the same USB module with another Velbus module
  • the same Velbus module with another USB module
  • …

Is that a possibility for you?
Otherwise return the module(s) to your vendor for checkup/repair.

6

did what u suggested, no luck…

7

I just noticed now that you mentioned [quote=“Ciceron, post:1, topic:14646”]
I have only connected vmb2bl
[/quote]
Velbus isn’t ment to work with only one module, since modules expect an answer (acknowledge) from a second module. Without answer they go in error mode. Can you try adding at least one other module? Also don’t forget to set the terminators (although in such a tiny setup it shouldn’t matter that much, but it’s still good practice).

Also, which version of Velbuslink do you use? Have you tried the latest version?