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Configuring the RSLinx DF1 Driver

In this section, we’ll set up the RSLinx DF1 Driver. Communications is very important in Industrial Automation. If you cannot communicate, you cannot go online to troubleshoot or change the program in your system. This document will guide you through Configuring the DF1 Driver in RSLinx. RSLinx is the communication server that interfaces between your processor and RSLogix/Studio 5000. We will use the same procedure to an SLC5/03 or higher, Micrologix, or PLC-5. The ControlLogix L6x or earlier has a serial port by you can communicate using the DF1 Driver.

What you will need:

To communicate with your ControlLogix system, you will need a 1756-CP3 cable (or other null modem cable). You will also need RSLogix/Studio 5000 installed on your computer with RSLinx, and an available RS232 port on your PC. New computers are not usually equipped with an RS232 port, so you can use a USB to Serial adapter.

If you are using a Micrologix 1000, please use a 1761-CBL-PM02 cable. If you are connecting to a PLC-5, realize that the PLC-5 has a 25pin RS232 port, so you may need a 9 to 25 pin adapter.

1) Open RSLinx Communication server

Access RSLinx at it’s default location, which is under Start All Programs Rockwell Software RSLinx RSLinx Classic. If your computer has a shortcut on the desktop to access RSLinx, you will see the following icon:

2) Go to the “Configure Drivers” screen

Next, we will click on Communications Configure Drivers within RSLinx. A driver is just a set of instructions that tell your software how to interface with the hardware.

The package provides the installation files for FTDI USB Serial Port Driver version If the driver is already installed on your system, updating (overwrite-installing) may fix various issues, add new functions, or just upgrade to the available version. Download drivers for modems for free. Operating System Versions: Windows XP, 7, 8, 8.1, 10 (x64, x86. Are you tired of looking for the drivers for your devices?

3) Choose “RS232 DF1 Devices”

The list of drivers can look very intimidating, but keep in mind that there are probably only a few drivers on the list that you may need to be concerned with for your location. Of course we need to choose the RS232 DF1 Devices driver.

Next, you will be prompted to enter a name for the driver. Here, we can just hit OK.

4) Configure the RSLinx DF1 Driver

RSLinx makes this step very easy. We do need to know which COM port your RS232 port is appearing at though. If you are unsure of this, go to your “Device Manager” in Windows. Then, press the + next to ports, then you will see the COM Ports that are available. In our case, the port is COM1. As long as you are connected to the processor, and the port is set at DF1 (which is default), you should have no problem using the Autoconfiguration feature. Finally, press the Autoconfig button, and you should get a message that the Autoconfiguration completed successfully. Finally, press OK, and close the “Configure Drivers” screen.

5) Verify Communication through the RSLinx DF1 Driver

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Of course to make sure you are communicating, go to the RSWho Screen. The RSWHO screen will verify communication.

Next, select the DF1 Driver on the left side of your screen.

Consequently, you will see your processor appear on the right side of the screen.

For more information, visit the SLC-500 or ControlLogix Category Page.

— Ricky Bryce


This article helps to fix an issue in which Windows 10 doesn't install specific drivers for USB audio devices on the first connection.

Original product version: Windows 10, version 1703
Original KB number: 4021854


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When you connect a USB audio device to a Windows 10 Version 1703-based computer the first time, the operating system detects the device but loads the standard USB audio 2.0 driver (usbaudio2.sys) instead of the specific device driver.


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This issue occurs because the USB audio 2.0 driver (usbaudio2.sys) isn't classified as a generic driver in Windows 10 Version 1703. Therefore, the system assumes that a compatible, nongeneric driver is installed for the device even though the driver is generic.

This issue also causes Windows 10 Version 1703 to postpone the search for other compatible drivers through Windows Update that typically occurs immediately after you install a new device.


To fix this issue, use one of the following methods.

Method 1

To resolve this issue, install update 4022716.

Method 2

If the device-specific driver is distributed through Windows Update, you can manually update the driver by using Device Manager. For more information about how to do this, see update drivers in Windows 10.

Method 3

If the device is not yet connected, first install the device-specific driver, such as by using the appropriate installer. After the device-specific driver is installed, Windows 10 will select that driver instead of the standard USB audio 2.0 driver when you first connect the device.

The following three updates are required before you install Windows Vista SP1. Alaska a75f2-m driver download for windows. However, these updates are also recommended if you do not intend to install Windows Vista SP1. The prerequisite updates will be installed by the stand-alone installer if they are necessary.

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See the device manufacturer's user guide for specific instructions about how to install the driver.

Method 4

If the driver isn't distributed through Windows Update, you can manually reinstall the driver. To do this, follow these steps:

  1. Install the device-specific driver (see Method 2).
  2. Open Device Manager.
  3. Right-click (or tap and hold) the name of the device, and then select Uninstall.
  4. Restart the computer.

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When it restarts, Windows will try to reinstall the device by using the device-specific driver.