The Exhaust Gas Temperature (EGT) indication comes from 11 dual thermocouples. The EGT thermocouples are wired in parallel and the average temperature is sent to both EEC channels for the ECAM display and engine limit protection.A single thermocouple located in Zone 3 (lower engine core area) sends the nacelle temperature signal to the EEC channel A for indication on the ECAM. EEC - ENGINE INTERFACE - ENGINE PARAMETER INPUTS FOR CONTROL, MONITORING AND INDICATION This Page Intentionally Left Blank FADEC D/O (3)EEC - ENGINE INTERFACE (continued) PRESSURE MODULEThe pressure module is installed within the EEC and is divided into two parts, one for each channel. Pressure lines are connected to the pressure module internal pressure transducers and sent to both EEC channels internally.The EEC uses the following pressure signals: :- P0 - Atmospheric static pressure for engine control,- P20 - Fan inlet pressure for EPR calculation,- P160 - Fan outlet pressure for condition monitoring,- P25 - HP compressor inlet pressure for condition monitoring,- P30 - HP compressor outlet pressure for engine control,- P50 - LP turbine outlet pressure for EPR calculation. EEC - ENGINE INTERFACE - PRESSURE MODULE FADEC D/O (3)EEC - ENGINE INTERFACE (continued) DATA ENTRY PLUGThe Data Entry Plug (DEP) is a dual channel serial memory device supplying storage for engine specific performance and configuration information. The DEP includes a plug and housing, which is fastened to the engine by a lanyard.Two EEPROM (Electrically Erasable Programmable Read Only Memory) devices are located inside the plug, one EEPROM being allocated to each of the two channels of the EEC.Both DEP EEPROMs are programmed with identical data:- Engine serial number: The EEC needs to know which engine is mounted on,- Ratings/Bump: All data related to the available ratings and bump are stored in the EEC and the DEP index is used only as a means of selection,- EPR trim: The EEC trims the value of measured EPR in order to make every engine of a particular built standard appear identical to the aircraft,- EGT trim: The actual EGT limit allowed by the certification authorities may vary over the life of an engine project due to changes of turbine entry temperature clearance and/or due to engine modifications. However to reduce pilot confusion, all Trent 500 engines will appear to have the same red line EGT on the ECAM,- Engine standard,- Intermix/retrofit: Enables different standards of engine to be used on the same aircraft and operates to the same rating,- Fan stall index (provision): The EEC contains provision for software to detect, annunciate and avoid fan stall events,Idle point trim: To enable trimming of the engine idle speeds for minimum modulated idle and approach idle requirements. NOTE: The engine F/H and F/C data are not stored in the DEP. After engine replacement they have to be updated manually via the ACMS "SPECIAL FUNCTION/REPROGRAMMING" menu (AMM31-36-00).The EEC reads the DEP content during power-up test on ground and does the validation checks on the download data. The data is then compared to separate copies stored in the Non-Volatile Memory (NVM) of both EEC channels. If the DEP data differs from the NVM data, and there were no faults detected, then the EEC updates its NVM with this new data.The programming of the DEP requires a dedicated programmer. It is also used to read or erase the contents of the DEP.