EWS-DME/DDE interface

Identical variable codes are stored in the CAS control module and in the DME/DDE control module. The value of these codes changes after every start procedure. Start enable only takes place if the code sent by the CAS control module agrees with the code calculated in the DME/DDE control module.

The control modules are allocated only during initial programming of the DME/DDE control module. The engine control module then adopts the basic code of the CAS control module.