Fire service phase 1:

* Intended to be activated if there is a fire in the building
* Triggered by a keyswitch outside of the elevator at the lobby floor, or by a mesecons input (you can connect that to any kind of fire detection system you want)
* Elevators that are stopped at the lobby will open their doors and remain open
* Elevators that are stopped at a different floor will move to the lobby, open their doors, and remain open
* Elevators moving towards the lobby will continue directly to the lobby, open their doors, and remain open
* Elevators moving away from the lobby will stop at the next available floor, reverse direction without opening their doors, return to the lobby, open their doors, and remain open
* Once open at the lobby, all buttons are disabled (unless phase 2 is active, see below)

Fire service phase 2:

* Intended to be used by firefighters to access an emergency on a higher floor
* Triggered by the keyswitch in the car ("FIRE SVC" ON position)
* Car call buttons (floor buttons) inside the car work again
* Pressing "call cancel" will cancel all car calls (make the buttons go out again)
* Door will not close until the door close button is pressed (in real life, you would have to hold it - engine limitations currently prevent this)
* When the car arrives at a floor, the door does not open automatically
* Door can be opened by pressing the door open button (in real life, you would have to hold it)
* Car call security is bypassed (all floors are unlocked)
* Chimes and floor passing beep are disabled

Fire service phase 2 hold:

* Intended to be used by firefighters if they need to exit the elevator momentarily and don't want someone else to use it
* Triggered by the keyswitch in the car ("FIRE SVC" HOLD position)
* All buttons are disabled and doors will not close

Independent service (not required by code, but allowed and commonly implemented):

* Intended to be used by building staff for transporting maintenance-related items, in apartment buildings when someone is moving in or out, etc.
* Triggered by a keyswitch in the car ("IND SVC" ON position)
* If the car is in a group, hall call buttons (or DBD kiosks) connected to the group will call a different car. Hall call buttons connected to specifically this car will be disabled
* Car call buttons (floor buttons) inside the car work normally
* Pressing "call cancel" will cancel all car calls (make the buttons go out again)
* Car call security may or may not be bypassed depending on controller settings
* Door will not close until the door close button is pressed
* Door does open automatically (like normal operation)
* Chimes and floor passing beep are disabled

Car top inspection:

* Intended to be used by technicians for elevator maintenance and repair, or for other work in the shaft
* Triggered by the "INSPECT/RUN" switch on top of the car
* All buttons inside the car are disabled
* If the doors are closed, the car can be moved at reduced speed by pressing **and holding** the "UP"/"DN" buttons on the car top (in real life you would also have to hold an "ENABLE" button - but you probably don't have two mice)

Machine room inspection:

* Intended to be used by technicians for elevator maintenance and repair
* Triggered by the "INSPECT/NORMAL" switch on the controller
* All buttons inside the car are disabled
* If the doors are closed, the car can be moved at reduced speed by pressing the "UP"/"DOWN" buttons on the controller (in real life you would have to hold them - engine limitations currently prevent this)

Capture (not required by code, but implemented by MCE and others - I implement it similarly to MCE):

* Intended to be used by technicians prior to maintenance or repair, in order to clear out any traffic inside the elevator
* Triggered by the "CAPTURE" switch on the controller
* Hall calls will be canceled (or reassigned if possible)
* Car calls will continue to be served until there are none left
* When complete, the car will remain stopped at the last served floor with the doors closed

Test (not required by code, but implemented by MCE and others - I implement it similarly to MCE):

* Intended to be used by technicians to verify proper operation before allowing the public to ride
* Triggered by the "TEST" switch on the controller
* Hall calls will be canceled (or reassigned if possible)
* Car calls are served normally, but the doors do not open

Emergency stop:

* I hope this one is self-explanatory
* Triggered by the "RUN/STOP" switch on the controller

Swing operation (group operation only) (not required by code, but allowed and commonly implemented):

* Intended to be used by building staff to use one car out of a group for special use
* Triggered by a keyswitch or mesecons input
* Hall calls will no longer be assigned to this car by the dispatcher
* Hall call buttons connected to this specific car will work normally
* If hall call buttons connected to this specific car were set to not operate during normal operation, in this mode they will become active
* If this mode is selected on a simplex car, no change in operation will occur