Procedures Configuration by the Serial Console Procedure to enter serial console mode on C20 - C22 Turn off the power of the device. Connect the PC to the C1 micro-USB port of Ethernet converter using the dedicated USB/UART converter. Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button (or connect Din pin to GND pin if the button is not mounted). Turn on the power and wait a few seconds until the  orange  LED lights up. Release the button (or disconnect Din pin from GND pin). Procedure to enter serial console mode on C23 - C25 Install STM32 Virtual COM Port Driver. Turn off the power of the device. Connect the PC to the C1 micro-USB port using the USB cable (or use the dedicated USB/UART converter). Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power and wait a few seconds until the  yellow  CN LED lights up. Release the button (or disconnect Din pin from GND pin). Redisage Configurator Configuration procedure Change the device port service to the RemoteCOM.  Set up a port number. Enable or disable encryption. If encryption is enabled create a password. In the Redisage Configurator click add the device and then set the COM number and the service port. If encryption is enabled enter a password. Click save changes. Connect to the configured serial COM port via terminal software. Service mode Procedure to enter service mode for C20 - C22 converters Turn off the power of the device. Connect Ethernet converter to the dedicated USB/UART converter via the microUSB port. Connect the USB/UART converter to the PC. Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power. Wait until the ST indicator ( red  LED) lights up. Release the S1 button. If the process is successful, service commands can be typed into the terminal. Procedure to enter service mode for C23 - C25 converters Install STM32 Virtual COM Port Driver (if it was not done before). Turn off the power of the device. Connect Ethernet converter directly to the PC (the dedicated USB/UART converter is not obligatory). Open the serial console (default baud rate is 115200 bps). Press and hold the S1 button. Turn on the power. Wait until the ST indicator ( red  LED) lights up. Release the S1 button. If the process is successful, service commands can be typed into the terminal.