DS9490r fails after a while

[bytex]

I have a grid of 16 DS18B20 sensors, and i just replaced my passive serial adapter with a DS9490r atapter in order to expand with io, and get more speed.

But after some time all devices disappears and i get this error:

DATA: DS9490_reset
DEFAULT: Bad Adapter adapter reconnected
CALL: SERVER(1)DIR path=/uncached path_busless=/uncached
DATA: DS9490_getstatus(): never got idle StatusFlags=0 read=80
DATA: DS9490_reset: getstatus failed ret=-110
CALL: owserver: parse path=/uncached
CALL: PARSENAME path=[/uncached]
CALL: Directory message (one at a time)
CALL: DirHandler: pn->path=/uncached
CALL: DIRECTORY path=/uncached

I have to restart owserver to get this working again. My passive adapter never had this problem, i also had to tie vdd to ground to avoid getting 85C readings with the DS9490r

Any ideas

 

[ericvic]

I have a grid of 16 DS18B20 sensors, and i just replaced my passive serial adapter with a DS9490r atapter in order to expand with io, and get more speed.

But after some time all devices disappears and i get this error:

DATA: DS9490_reset
DEFAULT: Bad Adapter adapter reconnected
CALL: SERVER(1)DIR path=/uncached path_busless=/uncached
DATA: DS9490_getstatus(): never got idle StatusFlags=0 read=80
DATA: DS9490_reset: getstatus failed ret=-110
CALL: owserver: parse path=/uncached
CALL: PARSENAME path=[/uncached]
CALL: Directory message (one at a time)
CALL: DirHandler: pn->path=/uncached
CALL: DIRECTORY path=/uncached

I have to restart owserver to get this working again. My passive adapter never had this problem, i also had to tie vdd to ground to avoid getting 85C readings with the DS9490r

Any ideas

Make sure that you don't have any problems with your USB drivers. Also are you running the USB Adaptor through a USB Hub? If so try connecting it directly to a USB port on your machine, the USB Adaptors don't like running through hubs.

For the DS18B20 to run in parasitic mode you need to tie VDD to GND whether you are using the USB Adaptor or not.

Eric