Modbus A small tool to add every Modus/TCP device to Homey [HomeyPro_Modbus_AppLogo] [image] Modbus Connect every Modbus devices This tool allows to add any Modbus/TCP device to Homey without a specific app. You can read and write Modbus register with fl…

[image] RonnyW: Based on the log it seems you send 3 or 4 requests at the same time. Perhaps the Modbus device can’t process the calls in correct order. If you have flows in parallel, try to call the flow actions in sequence, if needed with a 1sec delay and check it this solves the issue. Yo…

Yes it requires advanced flows. I just did not know I had this feature.:grin:

I like your solution and want to use it for NIBE SMO S40. Could you give a clue how to get multiple text and values in the tile? And maybe make the heat pump icon available?

[image] Rmb: Yes it requires advanced flows. I Yes. with advanced flow you can process a flow card and await the result you get back as a token that you can use in following cards (write to virtual devices …). In a standard flow, you can only process a flow action (fire and forget) without b…

You can create ab advanced flow. Then insert the time trigger card. Then insert the Modbus action cards one after another connected in line. This way, the second cards starts after the previous one is completed.

[image] CaptainVoni: I have multiple registers with a documented size of 6 Did you eventually manage to read these registers with size 6? I have a NIBE SMO-S40 with several registers of size 6 like Hot water, compressor only MODBUS_INPUT_REGISTER 1583 10 kWh 6 0 9999999 0] I can read it …

[image] Rmb: Did you eventually manage to read these registers with size 6? Yes, I usually read them as “INT32-LE (16bit Word LE)”. I have no idea what the variable size mean, it just doesn’t make any sense. [image] Rmb: I can read it with size 4 The “size” isn’t used for anything el…

It looks like NIBE counts the size in bytes (8 bits) en the Modbus app in 16 bits. Indeed in the Modbus app size only matters when reading bytes. NIBE register 1489 (number of compressor starts) reads: Size 4 registers shown in BYTES (so 64 bits) : 02 14 00 00 01 BD 00 00 INT16: 532 INT16-LE:512…

[image] Rmb: It looks like NIBE counts the size in bytes (8 bits) My though also, but Modbus registers are always 16 bit wide. So a variable of size 5 would use two and a half registers. That doesn’t make much sense to me. [image] Rmb: the Modbus app in 16 bits. That’s how it should w…

[APP][Pro] Modbus - Connect every Modbus devices

Apps

CaptainVoni June 4, 2024, 11:18am 291

Sorry, I’m a bit low on time lately. I answered your question in the other thread.

Topic		Replies	Views
[APP][Pro] SolarEdge + Growatt TCP modbus Apps app , pv-solar	1775	49843	May 2, 2026
[APP][Pro] Support for Fronius inverters and smart meters Apps app , homey-pro	93	4932	September 13, 2025
[APP][Pro] Huawei FusionSolar Manager Apps	152	967	May 5, 2026
[APP][Pro] Huawei Solar - Smart energy for a better life Apps	325	18533	January 24, 2026
[APP][Pro] SMA Energy - My home. My energy. Our climate Apps app , homey-pro , pv-solar	512	29368	May 8, 2026

[APP][Pro] Modbus - Connect every Modbus devices

Related topics