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--- technik:powmr-hvm6.2m_with_tasmota [2025/10/04 12:41]
ich [Tasmota ModBus Script]
+++ technik:powmr-hvm6.2m_with_tasmota [2026/11/15 10:48] (current)
ich [PowMr POW-HVM6.2M with Tasmota]
@@ Line 3: / Line 3: @@
 To connect my **PowMr solar inverter** to **Home Assistant**, I needed some kind of adapter in between. I decided for **ESP32C3** with **Tasmota** firmware.
   * [[https://github.com/arendst/Tasmota]]
+  * {{ :technik:PowMr1_sch.pdf|Schaltplan}}
 Tasmota was comparatively easy to download and translate on my PC. Tasmota comes with a universal interface for ModBus devices such as PowMr. However, the ModBus register names and formats must be given in a kind of script.  Register and HW interface of my PowMr inverter was nicely analysed by
   * [[https://github.com/odya/esphome-powmr-hybrid-inverter?tab=readme-ov-file]]
@@ Line 54: / Line 55: @@
 ===== Tasmota ModBus Script =====
-I needed the script to access my Modbus based solar inverter PowMr. PowMr inverter are all very similar. Luckily
+I needed the script to access/read my Modbus based solar inverter PowMr. PowMr inverter are all very similar. Luckily
   * [[https://github.com/leodesigner/powmr_comm]]
 investigated already on the registers for these PowMr inverters.
-HW: GPIO20/21(Rx,Tx) configured as 'None' where used.
+HW: GPIO20/21(Rx,Tx) configured as ''None'' where used.
 Tasmota Scripting was the most ugly part of the project.
@@ Line 156: / Line 157: @@
 </code>
+===== PZEM004 module =====
 PowMr inverter lacks the AC input  power measurement. For this reason I added a PZEM004 module for power measurement, which is already fully supported by Tasmota - simply by selecting Rx and Tx-PZEM004 in the Tasmota pin configuration menue.
+{{:technik:config_pzem.png?200|}}
-===== Tasmota-Berry ModBus Script =====
+===== Tasmota-Berry ModBus Scripting =====
-Dies sind Ideen für ein schöneres Berry Script. Dafür muß in der Pin configuration für pin20/21 statt 'None', 'ModBusRx/Tx ausgewählt werden, um das 'ModBusSend' Kommando zu ermöglichen.
+The above Tasmota script lacks the possibility of changing values on the modbus device (just reading is possible).
+Dies sind Ideen für ein schöneres Berry Script. Dafür muß in der Pin configuration für pin20/21 statt ''None'', ''ModBr Rx/Tx'' ausgewählt werden, um das ''ModBusSend'' Kommando auf der Console zu ermöglichen.
+<code txt console commands>
+ModbusBaudrate 2400
+ModBusSend {"deviceaddress": 1, "functioncode": 4, "startaddress": 4501, "type": "uint16", "count": 1}
+</code>
+Zunächst antwortet dieses Kommando nicht mit ''ModBusReceive'' .
+Andere User schreiben, dass dieser Berry Mode leider Crash gefährdet ist.
-  ModBusSend {"deviceaddress": 1, "functioncode": 4, "startaddress": 4501, "type": "uint16", "count": 1}
-{{:technik:config_pzem.png?200|}}

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