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+===== Modbus =====
+----
+Solar Monitor uses open communication protocol Modbus SunSpec, which meets requirements of [[https://sunspec.org/|SunSpec Alliance]]standard.\\
+\\
+Positive: fast communication
+Negative: communication isn't secured
+<WRAP info> Maximum number of clients who can send requests to Solar Monitor at the same time is 2 clientsl. </WRAP> In default setting of SM2-MU Modbus is disabled.\\
+{{  :en:sim:manual:menu_nastaveni:modbus_zakazan.png?direct&  }}\\
+\\
+Enable Modbus\\
+{{  :en:sim:manual:menu_nastaveni:modbus_nastaveni.png?direct&  }}\\
+**Port** \\
+Port for device communication. In default setting there is port 502 (same for TCP or UDP). This port works with packets. Modbus device address is a part of packet. You can change it if you need.\\
+\\
+**Power control** \\
+Select here, which tool will control the output:\\
+//No//- power wil be controlled by SM2-MU via module [[:en:sim:manual:rozsirujici_moduly:sm2_pc|SM2-PC]].\\
+//Yes//- <font 12.8px/arial;;#000000;;#ffffff>power wil be controlled via</font> Modbus protocol.\\
+\\
+**Regime** \\
+Type of network communication.\\
+//TCP// - max. 2 TCP channels, i.e. only  PLC devices can be connected at the same time\\
+//UDP// - any number of PLC or programmes can communicate via UDP protocole (e.g. Tecomat Foxtrot)\\
+//UDP & TCP// - only 1 TCP channel and any number of PLC or programmes via UDP protocol\\
+\\
+When you have saved your choice, communication opens at the port.\\
+\\
+Modbus communication can be displayed in application [[http://sunspec.org/download‐sunspec‐dashboard/|SunSpec Dashboard]] (more info and installation conditions to be found [[https://sunspec.org/sunspec-dashboard/|here]]).\\
+\\
+__Example:__ \\
+In Solar Monitor's web interface we can see these devices detected.\\
+{{  :en:sim:manual:menu_nastaveni:sm_detected_devices.png?direct&  }}\\
+In SunSpec Dashboard app click on bookmark //Device// and then //Open//.\\
+{{  :en:sim:manual:menu_nastaveni:dashboard.png?direct&  }}\\
+\\
+A window with access parameters settings to Solar Monitor will open.\\
+Fill in //IP Address//with Solar Monitor address. Fill in //Slave ID//with number of detected device (e.g. inverter). {{  :en:sim:manual:menu_nastaveni:open_device.png?direct&  }}\\
+Application will search the inverter and display blocks which will show values of parameters. Supported versions enable also writing the values.\\
+<WRAP half column> </WRAP> <WRAP half column> {{  :en:sim:manual:menu_nastaveni:common.png?direct&  }}</WRAP> <WRAP half column> {{  :en:sim:manual:menu_nastaveni:inverter.png?direct&  }}</WRAP> <WRAP half column> {{  :en:sim:manual:menu_nastaveni:controls.png?direct&  }}\\
+</WRAP> <WRAP half column> {{  :en:sim:manual:menu_nastaveni:mppt.png?direct&  }}\\
+</WRAP> If you want to read the parameters repeatedly, click on //Read // button on dashboard.\\
+For recording values, click on //Write//.
+=== How to add a file with more definitions of  ak přidat složku s další definicí modelu SunSpec (SMDX) ===
+V aplikaci SunSpec Dashboard klikněte na záložku //Tools// a poté na //Model Directories//.\\
+{{  :en:sim:manual:menu_nastaveni:dashboard_tools.png?direct&  }}\\
+Klikněte na tlačítko //Add…// a v počítači vyhledejte složku se soubory smdx.\\
+{{  :en:sim:manual:menu_nastaveni:add_directories.png?direct&  }}\\
+Klikněte na OK.\\
+Složka bude přidána do vyhledávací cesty informačního modelu.