19. Troubleshooting
a) Possible Errors during Communication
Drivers not installed:
Re-install CP210xVCPInstaller.exe on the CD in directory MCU
Drivers not installed correctly:
Uninstall and reinstall drivers
COM-Port above COM10:
Move comport: Go to Properties / Connection Settings / More... / COM port number
in the device manager and find a free comport below COM10
Comport cannot be selected in the software:
First connect USB, then start the software "Steuerungsmodul.exe"
Software message "ERROR: No answer received from module!":
Check USB connection between the module and PC or check operating voltage
Select correct COM port in the software and click "Status" again
Operating voltage missing or too low
b) Possible Errors during Logon
SIM card locked:
Insert SIM card in a mobile phone and unlock with the PUK
No four-digit pin code:
Insert SIM card in a mobile phone, activate PIN query and set a four-digit code
Display "Level = 99" and signal strength only shows red bars:
Not logged on to the GSM network yet; wait until the GSM module has logged on.
Move the aerial if required.
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