# \[APP\]\[PRO&CLOUD\]\[OFFICIAL\] Growatt - MODBUS TEST SITES NEEDED **URL:** \ **Category:** Apps\ **Tags:** app, homey-pro, homey-bridge\ **Created:** [April 8, 2025, 9:02am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233 "2025-04-08T09:02:04Z")\ **Posts on this page:** 20\ **Page:** 10
**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\ **Post date:** [December 24, 2025, 3:00pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/187 "2025-12-24T15:00:23Z")
> [@OH2TH](#): > > Growatt app is still using probably the last value received from the API most likely yes. I dont know how to solve this, since the 9.4 is apparently what the api reported last. ---
**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\ **Post date:** [December 24, 2025, 3:03pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/188 "2025-12-24T15:03:06Z")
> [@Peter\_Kawa](#): > > AC limit should be at 0% or at 100% when it should not limit anything? > My 2019 S-2000 probably lacks that option anyway. By default it should be 100% when not limiting anything. I wonder if the 1% is actually 1 (=100%). The api is so inconsistent that it would not surprise me that for your inverter it reports 1, and other inverters report 100… I dont know which inverters lack the option. There is no documentation and also no clue from the api. ---
**Author:** ![DaneedeKruyff](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/daneedekruyff/32/964_2.png) [@DaneedeKruyff](https://community.homey.app/u/DaneedeKruyff)\ **Post date:** [December 24, 2025, 3:04pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/189 "2025-12-24T15:04:19Z")
I think the AC power limit is a display issue: This flow: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/2/7280d4575f1782ce5f5fd56cf71660ddfc63cbb9.png) results in this value: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/0/d/0dd2a9055a0af7bcc31d59f07d8c55cb1861831e.jpeg) I’m also curious about the actual values for Energy and Energy today as they don’t match the actual data in the Shine app and returned from the inverter: Shine app: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/f/8/f85412f94f2ae5106481922c3d450ce5de8fb82b.png) E\_Today and E\_Total Actual data from the inverter: ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/7/a/7ac4ff2bb226ad2174e9b11202e5a8f7215ab576.png) todayEnergy and totalEnergy Edit: The value actually written to the inverter for AC Power Limit is correct (In my previous screenshot I already reverted it back to 100%): ![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/c/5/c5773714ccb27d45a38d43d76edc2dd72661c0a1.png) ---
**Author:** ![OH2TH](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/oh2th/32/111414_2.png) [@OH2TH](https://community.homey.app/u/OH2TH)\ **Post date:** [December 24, 2025, 3:07pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/190 "2025-12-24T15:07:13Z")
Any chance the API returns the mode state? If in standby then production should be 0W. Though what if there is battery. ---
**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\ **Post date:** [December 24, 2025, 3:08pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/191 "2025-12-24T15:08:37Z")
> [@DaneedeKruyff](#): > > think the AC power limit is a display issue: Ah, that confirms it 🙂 Need to see how to fix the inconsistency. > [@DaneedeKruyff](#): > > I’m also curious about the actual values for Energy and Energy today as they don’t match the actual data in the Shine app and returned from the inverter The Homey app now takes the PV power/energy from the DC side. That is the only way to be sure the data is for PV generation. When taking the data from the AC side, it will be a bit lower due to inverter losses. But also I cannot guarantee anymore that it represents the PV yield, since batteries also deliver/take power from the AC side. ---
**Author:** ![RM\_de\_Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/rm_de_gruijter/32/120762_2.png) [@RM\_de\_Gruijter](https://community.homey.app/u/RM_de_Gruijter)\ **Post date:** [December 24, 2025, 3:09pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/192 "2025-12-24T15:09:51Z")
> [@OH2TH](#): > > y chance the API returns the mode state? need to check if I can find something that is present for all the inverter types. > [@OH2TH](#): > > If in standby then production should be 0W. On the other hand: is there no user setting to disable standby / keep reoprting 24/7 ? ---
**Author:** ![DaneedeKruyff](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/daneedekruyff/32/964_2.png) [@DaneedeKruyff](https://community.homey.app/u/DaneedeKruyff)\ **Post date:** [December 24, 2025, 3:11pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/193 "2025-12-24T15:11:28Z")
Ah, ok that’s too bad, I can’t read the total from the PV side so I can’t compare, but when I compare the PV power and Output Power I see a difference, haven’t actually calculated the loss/efficiency but looking at the numbers it seems to be in line when comparing the totals between the shine app and your app. ---
**Author:** ![Ruuduitdegraaf](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ruuduitdegraaf/32/120861_2.png) [@Ruuduitdegraaf](https://community.homey.app/u/Ruuduitdegraaf)\ **Post date:** [December 24, 2025, 5:50pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/194 "2025-12-24T17:50:28Z")
Many thanks for this update! During the day the app gave nice results, except the **AC power limit** reported always **- minus sign** I saw the set limit was working though not reported back. I read the remark about the difference between reported power from this app and the Growatt/sunshine website. and that the difference is due to reporting the DC values rather than the AC values. Since I have only the inverter I would prefer the AC power to be reported. (but understand trade-offs have to made) ---
**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\ **Post date:** [December 24, 2025, 6:35pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/195 "2025-12-24T18:35:51Z")
> [@Ruuduitdegraaf](#): > > **AC power limit** reported always **- minus sign** Can you my try setting it once to 100% via the flow card? Is it reporting back after that? > [@Ruuduitdegraaf](#): > > Since I have only the inverter I would prefer the AC power to be reported. (but understand trade-offs have to made I am rethinking about if/how to do this. ---
**Author:** ![Ruuduitdegraaf](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ruuduitdegraaf/32/120861_2.png) [@Ruuduitdegraaf](https://community.homey.app/u/Ruuduitdegraaf)\ **Post date:** [December 24, 2025, 6:42pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/196 "2025-12-24T18:42:47Z")
§§ > [@Gruijter](#): > > Can you my try setting it once to 100% via the flow card? Is it reporting back after that? I did that during the day: I did set it to 10% then back to 100%. During the 10% setting the output power was reduced. (to 400W = 10%) The **AC power limit** did not change: remained showing the - (minus) sign and still is. Ruud ---
**Author:** ![Thomas\_Scherzinger](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/thomas_scherzinger/32/121430_2.png) [@Thomas\_Scherzinger](https://community.homey.app/u/Thomas_Scherzinger)\ **Post date:** [December 27, 2025, 10:28am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/197 "2025-12-27T10:28:33Z")
Updating the API data also takes varying amounts of time throughout the day, between 5 and 15 minutes. ---
**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\ **Post date:** [December 27, 2025, 10:51am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/198 "2025-12-27T10:51:22Z")
> [@Thomas\_Scherzinger](#): > > between 5 and 15 minutes How can you tell? ---
**Author:** ![Ruuduitdegraaf](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/ruuduitdegraaf/32/120861_2.png) [@Ruuduitdegraaf](https://community.homey.app/u/Ruuduitdegraaf)\ **Post date:** [December 27, 2025, 11:36am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/199 "2025-12-27T11:36:47Z")
> [@Gruijter](#): > > I am rethinking about if/how to do this. Maybe data for both DC (solarpanels) and AC power (fed into the mains) can be made available so we (users) can chose what we use. I dont oversee what this means for the energy tab. Ruud ---
**Author:** ![Thomas\_Scherzinger](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/thomas_scherzinger/32/121430_2.png) [@Thomas\_Scherzinger](https://community.homey.app/u/Thomas_Scherzinger)\ **Post date:** [December 27, 2025, 3:56pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/200 "2025-12-27T15:56:44Z")
With a klick on the power button from the device. ---
**Author:** ![Paolo\_Baccolo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paolo_baccolo/32/120823_2.png) [@Paolo\_Baccolo](https://community.homey.app/u/Paolo_Baccolo)\ **Post date:** [January 9, 2026, 7:28am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/201 "2026-01-09T07:28:50Z")
I have an API login error. I contacted support, ([service.nl@growatt.com](mailto:service.nl@growatt.com)) but they redirected me to local support. I haven’t received a response from the local support team yet, so I’m waiting 🙄 ---
**Author:** ![Gruijter](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/gruijter/32/1973_2.png) [@Gruijter](https://community.homey.app/u/Gruijter)\ **Post date:** [January 9, 2026, 7:35am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/202 "2026-01-09T07:35:12Z")
@Doekse ---
**Author:** ![Paolo\_Baccolo](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/paolo_baccolo/32/120823_2.png) [@Paolo\_Baccolo](https://community.homey.app/u/Paolo_Baccolo)\ **Post date:** [January 9, 2026, 9:15am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/203 "2026-01-09T09:15:24Z")
Here’s a small but important update: I removed and reconfigured the datalogger on the inverter, logged in again, and recreated the API setup. Everything is now working perfectly! Thank you @RM_de_Gruijter! 🙌 ---
**Author:** ![divad](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/divad/32/114447_2.png) [@divad](https://community.homey.app/u/divad)\ **Post date:** [February 27, 2026, 5:36pm UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/204 "2026-02-27T17:36:48Z")
Hello, is it planned to add an action card for the NOAH 2000 battery to set the ‘Output Power’? Right now the app only allows to view some of the device’s info. Thanks! ---
**Author:** ![erlend\_oyen](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/erlend_oyen/32/18133_2.png) [@erlend\_oyen](https://community.homey.app/u/erlend_oyen)\ **Post date:** [February 28, 2026, 11:35am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/205 "2026-02-28T11:35:45Z")
Hi I removed my growatt inverter and Uninstalled the app. But when I try to add the inverter again, I just get the message no new device found. I can login to shinephone with my same cred and Se data from the inverter Any ideas? ---
**Author:** ![Heino\_Kempers](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/heino_kempers/32/3613_2.png) [@Heino\_Kempers](https://community.homey.app/u/Heino_Kempers)\ **Post date:** [March 14, 2026, 7:29am UTC](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233/206 "2026-03-14T07:29:31Z")
Hi, great app. I have installed the grohome manager x as a meter but not all data is coming through. thing like frequency and voltance are working but power (W) and ussage (kwh) aren’t visible. [Previous page](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233.md?page=9) [Next page](https://community.homey.app/t/app-pro-cloud-official-growatt-modbus-test-sites-needed/134233.md?page=11)