Neuer ioBroker-Blog online: Monatsrückblick März/April 2026

[zim]

Hi All,

Im trying to connect my Wago to IObroker by ModBus.

I have Holding Registers (example 12300) which need to be as push button, and Discrete Inputs (example 551) as state.

Im trying hqwidgets on/off button as Object ID putting 551 and as Object ID on true 12300. Value min.=0 and max=1.

And its working for some time.

Then after adding next room every thing is broken it seams like IObroker is setting value to Discrete Inputs and stop reading them (all). When im going to objects I can see that 551 against TRUE is set to 0.

So my question is there a mistake in my method or possibly You have better one. Or its a bug?

Best Regards,

[Stabilostick]

First, I‘m using the modbus-adapter in slave and in server mode. After some fiddeling with the correct register settings the adapter is working flawlessly.

An important setting was to disable „aliases“ in the adapter options.

[zim]

Hi,

I have no problem with "normal" modbus communication,

Are You using push buttons in modbus ?