Procedure

1. On the app login screen, select Advanced User, enter the password, and tap Log In. The main menu screen of the PID module is displayed, as shown in Figure A-10.
   Figure A-10 Main menu screen of the PID module
   
   NOTE:

   • The initial password for connecting to the PID module from the app as Common User, Advanced User, and Special User is 00000a. Use the initial password upon first power-on and change it immediately after login. To ensure account security, change the password periodically and keep the new password in mind. Not changing the initial password may cause password disclosure. A password left unchanged for a long period of time may be stolen or cracked. If a password is lost, devices cannot be accessed. In these cases, the user is liable for any loss caused to the PV plant.
   • If you log in to the app after the PID module connects to the app for the first time or PID module factory defaults are restored, the quick settings screen will be displayed. On the quick settings screen, you can set basic parameters for the PID module. After setting parameters, you can modify the parameters after tapping Settings on the main menu screen.
   • If you do not set basic parameters for the PID module on the quick settings screen, the screen is still displayed when you log in to the app next time.

2. Choose Function Menu > Settings > Comm. Param. The screen for setting communications parameters is displayed.
   Figure A-11 Communications parameter screen
   

3. Choose RS485 > RS485 Address and change the RS485 address.
   Figure A-12 Setting the RS485 address