2. Force Feedback Configuration Settings
The force feel settings are stored
in .cfg configuration files in the CL software working folder. The
settings can be altered manually using a text editor (eg Notepad),
however it is easier to use the BFF CL Settings application.
A number of configuration files
are provided in the software zip archive and can be used as a start
point for your own set up. Chose the sample configuration of the
aircraft type closest to your own.
Settings for each control axis are
displayed separately in a tabbed layout.
Move the mouse over any input
field in the Elevator settings area to see a pop-up help
window for that setting.
To save the settings to a .cfg
configuration file hit Save. Note that changes made to
individual settings will not be saved until the Save button
The Make_Active button will
save the settings to a specified .cfg file AND instruct the BFF
Control Loader to re-load those settings if it is active.
The Close button will close
the application without saving.
Note that the COM port and baud
for the force demand output is set in the Elevator settings area, as
are the Pilot and Co-Pilot joystick numbers.
Background Process Settings - Pry_S.cfg
Some advanced settings are made in
the Pry_S.cfg file which is read by the CL software background
process when it runs. Normally you will not need to alter these
settings however there are some that may need to be adjusted when
you first setup your system.
With v1.0+ of the BFF_CL_Setup
application use button Bck_Grnd_Set to display and set the
Pry_S.cfg file settings - this is the recommended way to set the
background process settings.
Note, not all settings in the
file are active when the software is in BLDRV-12/24 card mode.
Line 1: force loop delay time in
ms - set this to give a "Force Loop" refresh rate of approx 50Hz.
The refresh rates are displayed on the main CL window. Lowering the
delay will increase the refresh rate.
Lines 17, 18 & 19: disengage
trigger speeds. The software will detect over-speeds on the control
movements and will disengage the drive if the set speeds are
exceeded. These values can be increased to reduce the trigger
Line 43: Joystick card number for
trim pot inputs - only required if the pots are not on the main
pilot joystick card. Please note the correct axis letter numbers to
be used for the trim pots (see also the system wiring diagram and
notes). NEW for v1.20 - if Line 43 is set = -1 then the joystick
trim buttons are overridden by keyboard keys with the same numbers.
This is useful when setting up the system and joystick pots/buttons
haven't yet been set up.
Lines 44 to 45: For Auto-Pilot
Following mode. Position error triggers for AP Disengage. The AP
will disengage if the controls are displaced when the system is in
AP following mode. These values set the sensitivity of the disengage
trigger. More sensitive (smaller) values will only work if the
Zero button has first been used to determine the true zero
position of the controls. Set values above 127 to completely disable
the disengage triggers.
There are several other advanced
settings available through the Pry_S.cfg file. The best way to set
these is using the setup application - Bck_Grnd_Set button.
NOTE Changes made to the
background process settings will require the CL software to be
re-started to activate them.
Pop-up tool tips are available for
the parameters if you use the Bck_Grnd_Set button the setup
application - just hover the mouse over an input field and the tip
The remaining PRY_S.cfg settings are as
described in the file and/or in the BFF CL Setup Application – do not alter these unless you are sure you
know what you are doing. Please contact me if you require more
4. Force Tuning for details on the force tuning procedures.