I have these saved, I think they are for two different controllers.
$UI_CONFIG.$BLNK_ENABLE = TRUE
$UI_CONFIG.$BLNK_TIMER is the amount of time before the backlight turns off if no buttons are pressed.
If $TX.$BLNK_ENABLE is TRUE, then $TX.$BLNK_TIMER is the amount of time
in minutes before the teach pendant screen becomes blank. This will prolong the life of the teach
pendant screen. Pressing any key will redisplay the screen.