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Tilen Suhadolnik 5 years ago in Devices / Modbus updated 5 years ago 0



Modbus read value problem

Eduardo Rosa 3 weeks ago in Devices / Modbus updated 2 weeks ago 7


I am working on an energy measurement project for a customer, in which I intend to implement Comfortclick/bOS as the management system.

I have established a modbus connection between an energy measurement device from Finder and the bOS. I simultaneously noticed that the measurement (voltage, current and power) shown on the Finder display differs from the reading obtained by the bOS which is slightly higher.


Connection Type: Serial

Serial Transmission Mode: RTU

Low Word First: False

Low Byte First: False

Data Format: LittleEndian

Write Function Type: WriteSingle

Read Function Type: ReadSingle

Modbus Table: InputRegisters

Data Format: Signed32Bit (to power) and Unsigned32Bit (to voltage and current)

Scale Factor: 1

Use Status Address: False

Readcyclically: True

Please, could you help me with the configuration in order to get the correct reading?




Modbus relay

Ohmin1970 2 months ago in Devices / Modbus 0

Need some help. I have a modbus relay and to turn on and off I have to write FF 00 for on and 00 00 for off to the relay with function code 5 (Write to single relay) how do I do it in jigsaw? Byte 1 adress byte 2 function code byte 3 4 adress of register (big-endian) byte 5 6 data of register (big-endian).


how to connect modbus analyzer 4 wire to a comfort click modbus dongle 2 wire?

Oti Dénia 5 months ago in Devices / Modbus updated by Fredrik Johansson 5 months ago 1

I need to integrate the measures of a Carlo Gavazzi WM12, but this has 4 wire connection.
Can you help me?
Thanks in advance.

WM12 CP v1r1 ENG 0903.pdf

WM12-DIN-96 IM ENG 0902.pdf

Bad communication between Jigsaw and MIM-B19N (MODBUS SAMSUNG)

Jose Jiménez 6 months ago in Devices / Modbus updated by Costel Miron 2 weeks ago 4

Hi everyone,

i have a jigsaw connected to a Modbus interface module MIM-B19N Samsung. I have the next parameters:

Image 3875

I attach the datasheet of this module to compare if you need:  Manual Interface MODBUS Maquinas clima Samsung.pdf

The question is that some times, randomly, the communication breaks down and we can control any of indoor units we have. In addition, i attach a screenshot of Jigsaw's logs:

Image 3877

I don't know if the problem is because of driver's parameters or firmware error. I will appreciate any help .




Juan Tomasetti 9 months ago in Devices / Modbus updated by Andrew Watson 8 months ago 7


I have a Grinder module, and I would like to connect a Solar Inverter via UART. In the Grinder module, I have connected the CP2102 adapter to the USB port, bOs recognizes it perfectly in the COM3 port. According to the solar inverter documentation, the communication is UART, 115200bps, 8bits data, 1 stop bit, no parity. The COM3 port, so I have configured it. But I can't get a response from the inverter. I have tried all the combinations on the bos, but I cannot receive data. Any suggestion???


Under review

Modbus devices with different properties in one bus.

Artem Kuteynikov 1 year ago in Devices / Modbus updated 1 year ago 2


is it possible to communicate with devices in the same bus, which have different settings (for example: Low Word First)? Could Data settings of Modbus driver be implemented on Slave node?

And a possibility to disable any Slave (for commissioning or testing) so that server won`t see an error, would be convenient.



What is Modbus Network Capacity in NUC or JIGSAW?

Thays Zanin 1 year ago in Devices / Modbus updated by ComfortClick Support 1 year ago 1

Good Morning!

I've been researching the Comfortclick website, but I have some doubts about Modbus.

Here are the questions below and also an outline of the basic concepts for Modbus RTC and TCP/IP:

1. Is there any difference in capacity between a NUC or JIGSAW?
2. Is there any difference in capacity between an RS-485 RTU or TCP/IP?
3. Is there any limitation or does bOS Comfortclick comply with the Modbus standard, ie up to 32 devices [without repeater] or 247 [with repeater]?
4. Is there the possibility of limitation by the manufacturer/device, having limited the amount of modbus addresses?
[As shown in the example on the Comfortclick page:


Protocol Modbus.pdf

Image 3377



1. Regarding Modbus, there is no big difference, both servers could handle similar number of Modbus devices (but number of Modbus devices is not the key factor it is number of registers/data points) if it is a commercial project I recommend you to use at least Grinder Black or even better Sledgehammer, due to professional server features (e.g. full disk backup, remote control of server hardware through web interface...)

2. No difference.

3. bOS comply with Modbus standard so you can integrate maximum number of devices according to Modbus standard.

4. Do not fully understand last question.

Best regards

Under review

Modbus TCP on bOS

nguyen nguyen 2 years ago in Devices / Modbus updated by ComfortClick Support 2 years ago 5

Dear Ad,

How many external devices can be connected to a set of bOS via the Modbus TCP communication standard?

Thank & Best Regards


Prevent negative values from Modbus SMA

Michiel Kenis 2 years ago in Devices / Modbus updated 11 months ago 9


I'm reading values from my SunnyBoy SMA Inverter to shown the yield of my solarpanels in my bOS. 

I successfully connect to my SMA with below values:

Image 3064

It goes just fine as long as the sun is shining. Once the sun drops, the NaN value takes it's place and gives me the 

-2147483648 value; When plotting my daily yield, the few actual kw (max. 14 kW) vanishes compared to this ridiculous high value. Is there any way to prevent this kind of spikes? 

I've tried adding a new integer value which is set with a Program and corrected to 0 when the value drops below 0, but this still doesn't works out... Is there another SMA user suffering from the same?