get_input_register_bit

This function reads a single bit 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
DRFLEx.h within class CDRFLEx, public section

bool get_input_register_bit(unsigned short address, int& out_val, int timeout_ms = 300) {
    return _get_input_register_bit(_rbtCtrl, address, &out_val, timeout_ms);
};

Parameter

Parameter Name	Data Type	Default Value	Description
address	unsigned short		Input register address (bit index, 0~63)
out_val	int&		Input bit value to read 0 : OFF 1 : ON
timeout_ms	int	300	Timeout in milliseconds

Return

Value	Description
0	Error: failed to read input register bit
1	Success: input register bit read

Example

#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 bit (timeout 300 ms)
    // Initialize to -1 to indicate “not read yet” if the call fails.
    int out_bit = -1;
    robot.get_input_register_bit(0, out_bit, 300);
    std::cout << "addr=0, out_bit=" << out_bit << std::endl;

    robot.close_connection();
    return 0;
}

This example reads the input register bit at address 0 (Bit_Input_Register[0]).