Thank you for answering. But the problem is not solved.

What is [UART_ADDRESS]?
What is [DEVICE_ID]?
Where is it listed in evok.conf?

[EXTENSION_1] global_id = 2 ; Mandatory, REQUIRED TO BE UNIQUE device_name = xS10 ; Mandatory modbus_uart_port = /dev/extcomm/0/0 ; Mandatory neuron_uart_circuit = 1_01 ; Optional, allows associating extensions with specific Neuron UART-over-Modbus ports (not possible for non-Modbus UART po$ allow_register_access = True ; Optional, False default, is mandatory with third-party devices address = 15 ; Optional, 15 default scan_frequency = 2 ; Optional, 1 default scan_enabled = True ; Optional, True default baud_rate = 9600 ; Optional, NEEDS UNIPI IMAGE TO WORK! USE API TO CONFIGURE UART MANUALLY IF USING STANDARD RASPBIAN parity = N ; Optional, NEEDS UNIPI IMAGE TO WORK! USE API TO CONFIGURE UART MANUALLY IF USING STANDARD RASPBIAN stop_bits = 1 ; Optional, NEEDS UNIPI IMAGE TO WORK! USE API TO CONFIGURE UART MANUALLY IF USING STANDARD RASPBIAN

Please give me sample code of data transmission.
Although it examined it considerably, I feel that there are few documents.