GREE Air-ccoled Closed Control Unit Service Manual
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Now,the system support Com1 and Modbus.
4.2.4 Bus Configuration
Click Main Menu->System->The bus install and the interface of bus configuration will show.
Select the COM number in "COM". COM1 is used in this example. Then input "Bus1" in
"Bus Identity" , that is decided by yourself and click Add as the following figure. Click "Close" to
finish adding the bus.