Hi There,

Is there a way to limit the amount of times (for example, write only once) to a register or coil?

From what I can see, listing a write register in 'extended data' will keep writing to the register(s) on a interval based on the 'Action Interval'.

We have have a few registers on a field ...

Hi Amar,

Thank you for your reply.

I had an old version of libmodbus. Running the following fixed the issue:
Thank you for you help.

Chris

Hi Amar,

Thank you for your reply.

I copied the piModbusMaster and piModbusSlave to /usr/sbin/ then I rebooted the Connect+. It did not work. I deleted the Master RTU Master in Pictory and tried again. It did not work:


● pimodbus-master.service loaded failed failed Revolution Pi Modbus master ...

Hi Dirk,

Thank you for your reply.

I have Stretch installed on the production systems, not Buster. Only SSH access. Reflashing the devices will involve a long trip to site.

What are my options for resolving this?

Do you recommend a in-place upgrade of Stretch to Buster?

Kind regards,
Chris

Hi Kunbus,

I upgraded pictory from 1.4.2 to 1.4.7 on a kunbus connects +32gb are got the same "pimodbus-master.service failed" in systemd.

Its happened on 2 kunbus devices.

It seems to happen when adding a modbus register to the 'extended data' on a Modbus Master RTU device.

OS details are ...

Hi Dirk,

Sorry I didn't see your previous post! Here is the network topology.


Main Controller PC (Ubuntu 20.04)
2 ethernet interfaces:

-> 192.168.1.x
- Office Network

Seperate network with only modbus TCP/IP devices.
-> 192.168.2.x
-- Kunbus Connect+ : 192.168.2.3
-- Kunbus Core3 : 192.168.2.4 ...

Hi Dirk,

Did you manage to recreate the ethernet drop out issue?

Kind regards,
Chris

Hi Kunbus,

I can confirm this is working.

Thanks for the feature.

Kind regards,
Chris

Hi There,

I copied a _config file from one kunbus connect + to another and when I changed the baud rate or used any of the rs485 drop down settings parts of the Extended Data where lost.

In order to change the baud rate and parity, I had to manually edit it in a text editor.

Please see attached ...

Hi Dirk,

I'd like to get this resolved ASAP. We have 10 new kunbus devices installed in our electrical cabinets due for delivery in the next month.

As you can imagine, I am a little worried

Please email/send me the form.

Kind regards,
Chris