Bill,
All the following is for TRS2004. Most of it also applies in TRS2006.
Tutorial Driver Sessions
Layout: City and Country USA 2
Session: 2 Cab Tutorial
Comment: A good introduction to diesel and electric locomotive CAB mode. Includes explanatory guidance slides.
Layout: Outback Australia 2
Session: 3 Steam Tutorial
Comment: A good introduction to steam locomotive CAB mode. Includes explanatory guidance slides.
Engineer's Handbook
Provided in electronic form as an Adobe Acrobat PDF document. Extremely useful reading.
CAB Mode Diesel And Electric Loco HUD Displays
Flow (psi) - Change in brake pipe pressure. Probably the same for the entire train.
Brake pipe (psi) - High pressure means the brakes are off; low pressure means the brakes are on; probably the same for the entire train.
Brake cyl (psi) - High pressure means the brakes are on; low pressure means the brakes are off; this is the actual brake cylinder pressure, not that of the auxiliary cylinder; probably specific to each rolling stock vehicle.
Main res (psi) - The same for the entire train.
Equaliser (psi) - The expected final pressure after the system settles.
Throttle - Diesel 1-8; electric 1-?; red indicates that the dynamic brake is in use.
Reverser - Forward, reverse or neutral
Brake display:
Initial - might only apply with a Redhen
Application - brakes are on
Lap - pressure held steady
Release - brakes are off
Emergency - brakes are on
Handle off - I don't know what this means
The pressure fields react to the independent brake being applied and released, but the "Brake" field does not indicate its state.
CAB Mode Diesel And Electric Loco Brake Keyboard Controls
Release - Q
Lap - Z - Holds the brake pipe pressure at its current value, for partial application
Apply - A (in DCC mode the A key toggles the handbrake on/off; CAB mode is different; sorry if my earlier posting confused anyone)
Apply emergency brake - Pause/Break
Toggle independent brake on/off - E - braking affects loco only
Release independent brake only - D
The independent brake is mainly used to stretch a train.
Throttle or dynamic brake controls:
Increase throttle or dynamic brake - W - cannot use the > key in CAB mode
Decrease throttle or dynamic brake - X - cannot use the < key in CAB mode
Set to throttle or dynamic brake zero - S - in the real world the throttle should only be set from a high value to zero in an emergency
Toggle the dynamic brake on/off - C - can only be toggled when the throttle is at 0 - with the dynamic brake active, the throttle display is red; use the throttle to control the braking effect.
If you're not familiar with railway braking systems,
this Wikipedia article might help but it is all rather confusing at first. My apologies if you're a railway expert and the only problem is making things work in Trainz.
John