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Tilen Suhadolnik 2 years ago in Devices / Modbus updated 2 years ago 0


Under review

Modbus error handling new features

Jürgen Jürgenson 2 months ago in Devices / Modbus updated 2 months ago 2


I had a small problem with modbus connection that seemed to be all fine(Was connected and no errors in debug), but actually it didn't update values, but i had the error handling setting set to hide. 

Now here's my question if it's set to hide and there is some error does it drop the connection? Or will it still reconnect after the error just doesn't log the error?

I was looking at the diagnostics/debug and it didn't show me any timeouts but it looked like it only was asking 1 register for updates. after i disabled it and re-enabled it started to talk to me again(Started to poll/update all the registers). So right now i left the error handling to reconnect.(Only reason i left it in hide mode was so i could test registers that didn't respond for some reason, now i just turned off cyclical read on them) Modbus connection was "offline" for 2 days.

Also it would be awesome if we could disable/enable modbus driver from the visualization too,  I haven't found a way to do it. We can see the status of the driver that's it.




Relay board C0135 Integration with Comfortclick

Alexander Paredes 2 months ago in Devices / Modbus updated by Jürgen Jürgenson 2 months ago 1

Hi. i would like to know how this Relay board can work with comfortclick

it use MODBUS RTU and can be controlled Using the software in this Site,

also there is a guide on the website, http://www.bizkit.ru/en/2018/12/13/7222/

Under review

Modbus problem with version 4.5.5

Marco Magnani 7 months ago in Devices / Modbus updated by ComfortClick Support 5 months ago 6

Dears Support,

I discovered a ModBus bug in the new version 4.5.5: after few hours the modbus communication driver stops to work. In order to restart you need to reconnect to the server with the configurator toll, select the device modbus deactivate and enable again… after it starts to work again for other hours before stop again

I also tried to restart the server again, but it didn’t solve the problem

Can you have a look on the modbus part of the new server version please?




modbus write value problem

Andy Gill 9 months ago in Devices / Modbus updated 9 months ago 0

Hello there,

I'm on the latest Beta, I'm getting an issue since installing with a Modbus device, it's an I/O module but this only applies to the Digital Outputs which operate by setting the corresponding bit for the digital output.

However, despite the program I use giving out the correct value for the outputs I want on, the Uint16 register only changes for a short time and reverts back to the previous value, and doesn't change the device state? on occasions it does work making it all the more confusing, it's almost as if it's reading back the value from the Modbus device? even with "read Cyclically" off.

It wasn't happening before I upgraded, and to make it even more confusing it's not happening on two other similar devices!?

Any ideas?


Komfovent C5 Modbus TCP

Jürgen Jürgenson 11 months ago in Devices / Modbus updated 8 months ago 3

Hey Comfortclickers

Has anyone integrated Komfovent C5 with bOS? Could I get an example for it? I've made one for Vallox but havent had the time to make it for komfovent.

Under review

Modbus limit

Kristián Vojčík 1 year ago in Devices / Modbus updated 1 year ago 4

Hello. I am facing strange behaviour of Modbus device. I am sending about 150 values thru Modbs and after test I got an error Device is not connected. I see it been connected and immediately disconnected. So I try it with fewer values and it works. After many tries I got on point where it works but when I add one more Duble value it stop working. So I start wondering is there any limit for Modbus point like how many you can add under one Modbus device? I ended up utilising two Modbus devices so it works. Same issue on Jigsaw and Windows Server.

Under review

Response timeout with Vallox modbus

Jürgen Jürgenson 1 year ago in Devices / Modbus updated 10 months ago 4


We have 2 similar buildings, with same settings and hardware. We use Vallox ventilation and control them with USB modbus dongle. But after tomorrow we started to get response timeouts on one building(other building has no timeouts). The whole modbus line feels slower too(chaning the vent speeds works but it feels slower than before). I know the log used to be clean without any timeouts. Now im trying to debug what is causing it. So far it feels like they are responding but not for all requests. Here is a small screenshot where i get timeouts for ventilation State(4609) and Fan speed(4353)

Is there any other way to know witch ventilation is not responding(we have total of 19 units) The path only show the modbus dongle. I have looked at the times too and compared them to the log monitor, but it seams to me that the response timeouts are random. Sometimes they get awnsers sometimes they don't. Here are my settings for the USB dongle: 

Other building works just fine with the same settings, and changing vent speeds feels faster to me. 

Under review

Anybus M-Bus/ModBus TCP 80 Gateway

Jürgen Jürgenson 1 year ago in Devices / Modbus updated 12 months ago 4


Has anyone used this gateway with bOS? I'm trying to read out mbus (W.water, C.water and heating) meter values with bOS from the anybus gw, in anybus I can read the meter values and it has no problems with the readout. But in bOS I can't get the correct values to show. Scaling should be correct (0,001 for the water and  0,01 heating), i have tried almost all register numbers but none of them seam to display the correct values. 


Settings for the w.water meter, register address should be 130 or 150, but it gives constant 0 for value, with 149 I get a response 16,017 but it's the wrong value.

Modbus GW settings

Anybus meters with register numbers.

Any ideas what am I doing wrong?