.. _get_input_register_float:

get_input_register_float
------------------------------------------
This function reads a **float value** from the controller **input register**  
using the specified **register address**.  
It is typically used for PLC I/O register monitoring in Ethernet-based environments.

**Definition** |br|
``DRFLEx.h`` within class `CDRFLEx`, public section

.. code-block:: cpp

   bool get_input_register_float(unsigned short address, float& out_val, int timeout_ms = 300) 
   {
       return _get_input_register_float(_rbtCtrl, address, &out_val, timeout_ms);
   };

**Parameter**

.. list-table::
   :widths: 20 20 20 55
   :header-rows: 1

   * - **Parameter Name**
     - **Data Type**
     - **Default Value**
     - **Description**
   * - address
     - unsigned short
     - -
     - **Input register address** (float type, 0~23)
   * - out_val
     - float&
     - -
     - **Input float value** to read
   * - timeout_ms
     - int
     - 300
     - Timeout in milliseconds

**Return**

.. list-table::
   :widths: 25 75
   :header-rows: 1

   * - **Value**
     - **Description**
   * - 0
     - Error: failed to read input register float
   * - 1
     - Success: input register float read

**Example**

.. code-block:: cpp

   #include "DRFLEx.h"
   #include <iostream>

   using namespace DRAFramework;

   int main() {
       CDRFLEx robot;

       const char* ip = "192.168.137.120";
       if (!robot.open_connection(ip)) {
           std::cout << "Failed to connect: " << ip << std::endl;
           return 1;
       }

       // Read float (timeout 300 ms)
       // Initialize to -1.0f to indicate “not read yet” if the call fails.
       float out_float = 0.0f;
       robot.get_input_register_float(0, out_float, 300);
       std::cout << "addr=0, out_float=" << out_float << std::endl;

       robot.close_connection();
       return 0;
   }

This example reads the input register float value at **address 0(Float_Input_Register[0])**.