modbus_write_register

Name

modbus_write_register - write a single register

Synopsis
    int modbus_write_register(modbus_t *ctx, int addr, const uint16_t value);

Description

The modbus_write_register() function shall write the value of value holding registers at the address addr of the remote device.

The function uses the Modbus function code 0x06 (preset single register).

Return value

The function shall return 1 if successful. Otherwise it shall return -1 and set errno.

See also

    •   modbus_read_registers ⟨modbus_read_registers.md⟩

    •   modbus_write_registers ⟨modbus_write_registers.md⟩