#38: Reverted to slave=0, avoid propagating log messages to root logger

README.md

@@ -12,7 +12,7 @@ to the device's internal Wifi access point. For information about how to connect
 
 ## Requirements
 
-- Python >= 3.10
+- Python >= 3.9
 
 ## Usage
 
@@ -36,13 +36,13 @@ The above code snippet prints out the current input power value, e.g. `8.342 kW`
 
 During instantiation of a Sun2000 object the following parameters are accepted:
 
-| Parameter | Description                                                                                 |
-|-----------|---------------------------------------------------------------------------------------------|
-| host      | IP address                                                                                  |
-| port      | Port, usually 502, changed to 6607 on newer firmware versions.                              |
-| timeout   | Connection timeout                                                                          |
-| wait      | Time to wait after connection before a register read can be performed. Increases stability. |
-| slave     | Number of inverter unit to be read, used in cascading scenarios.                            |
+| Parameter | Description                                                                                                                         |
+|-----------|-------------------------------------------------------------------------------------------------------------------------------------|
+| host      | IP address                                                                                                                          |
+| port      | Port, usually 502, changed to 6607 on newer firmware versions.                                                                      |
+| timeout   | Connection timeout                                                                                                                  |
+| wait      | Time to wait after connection before a register read can be performed. Increases stability.                                         |
+| slave     | Number of inverter unit to be read, used in cascading scenarios. Defaults to 0, but some devices need it to be set to other values. |
 
 ### Read metrics
 

pyproject.toml

@@ -14,7 +14,7 @@ classifiers = [
     "Topic :: Software Development :: Libraries :: Python Modules",
 ]
 dynamic = ["version", "description"]
-requires-python = ">=3.10"
+requires-python = ">=3.9"
 keywords = ["sun2000", "modbus", "photovoltaic"]
 dependencies = [
     "pymodbus==3.7.4",

sun2000_modbus/inverter.py

@@ -12,10 +12,11 @@
 handler = logging.StreamHandler()
 handler.setFormatter(log_format)
 logger.addHandler(handler)
+logger.propagate = False
 
 
 class Sun2000:
-    def __init__(self, host, port=502, timeout=5, wait=2, slave=1):
+    def __init__(self, host, port=502, timeout=5, wait=2, slave=0): # some models need slave=1
         self.wait = wait
         self.slave = slave
         self.inverter = ModbusTcpClient(host=host, port=port, timeout=timeout)