BFF CL Software V2 (USB) - User Guide

BFF Control Loader software

Configuration Manager

(For CL_SPU_USB + BLDRV3 cards)

(For CL_SPU & BLDRV2 cards please use V1 of the software here....)

1. Introduction & Installation

2. FFB Configuration Settings

3. Operation

4. Force Tuning

5. Data Output Format

6. X-Plane Settings

7. Important Notes on Trim

   7.1 Trim Indicator Output Options

8. Auto-Pilot Following

9. User Guide Revisions

10. CL Software Revisions


Appendix A. Axis position feed to FS

Appendix B. Configuring electrical linking of dual control stations.

Appendix C. Configuring helicopter cyclic control loading mode.

Appendix D. Heavy Jet Mode 1

Appendix E. Sim Avionics Mode

Appendix F. Using with ProSim 737

Appendix G. Failure Mode Loading

Appendix H. Stick Pusher

Appendix I. BFF Motorised Trim Wheel

Appendix J. CL Controller UDP Data Mode




Software Download     



UpdatedV2.51 (Fully unlocked version - DropBox link)



IMPORTANT - The previous version of the On-Line User Guide (for older CL_SPU & BLDRV2 cards) is here



If the above downloads are not working you can use this DropBox folder for downloads - DROPBOX


Introduction & Installation

IMPORTANT - The BFF Control Loader software operates with BLDRV brushless motor driver cards in properly designed and built simulator flight control systems. Before using the software please ensure that your BLDRV3 drive system has been properly set up and commissioned, and has been tested using the BFF Driver Test application in accordance with the project instructions. For details of the project documentation see here, and for details of the BLDRV3 cards see here.

The BFF Control Loader software runs with MS FS9/X/2020 (also Lockheed Martin® Prepar3D®) and X-Plane v11+.

The BFF Control Loader V2+ software consists of two main applications. BFF Control Loader is the control loading driver software. The Configuration Manager is used for system setup. 

A third application, CL Controller now replaces the Driver Test App USB for setup and testing and is also included.

Software Installation

The software is free to download and use with your CL_SPU & BLDRV3 CL driver cards.

Installation is simply by unpacking the contents of the Zip package into a dedicated folder on your PC. The software does not write any values to registry, so to delete the software just delete the installation folder. Run the programs from this folder, or create shortcuts which point to the folder - DO NOT remove the files from the folder to run them.

DO NOT mix the files from new and old installs - always unzip the new software into a new folder.


If you are upgrading from a pre V2 version then do not mix the configuration files of the new and old versions. Unzip the new version into its own folder. Then run the Configuration Manager  in the new installation and use the IMPORT button to import the settings from your previous installation.


To use the CL software with FS9/X/2020 or P3D, FSUIPC needs to be installed. Use the latest version for the flight sim software you have and follow carefully Pete Dowson's installation instructions. See

A registered version of FSUIPC is not required, however please consider registering your FSUIPC - it helps keep this valuable utility going.

To use with X-Plane, XPUIPC v1.9.0 or later needs to be installed and the customised XPUIPC_offsets.cfg file in the zip package should be copied to the correct X-Plane XPUIPC folder. Follow the instructions in the XPUIPC documentation. See also section 6 for other important information. See

If you can't get to the XPUIPC website here's DropBox links for XPUIPC - V1.9 and V2.0


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