Microprocessor Memory - Electrolux NEAT Service Manual

MICROPROCESSOR MEMORY (MAIN PCB)
ROM
RAM
EEPROM
The overall structure of the microprocessor memory on the main PCB is subdivided into three sections:
ROM This area of memory contains the software with the general instructions that control the operation
of the appliance, such as those of the electrical components and alarms. The ROM is set up by
the manufacturer of the microprocessor, and cannot be modified.
RAM This part of memory contains all the variables used during the execution of the wash programme,
which are written in dynamic format. The RAM can be read using a DAAS interface.
EEPROM This area of memory contains:
→ the data necessary to restart the appliance in case of a power failure.
→ the parameters for the wash cycle, such as water fill level, speed and type of motor movement,
and the temperature during the various phases of the wash cycle. Once written, this data is
protected and, normally, can be read only using a DAAS interface
→ data relative to the configuration of the appliance, such as the speed of the final spin phase,
the volume of the tub, the type of washing system, etc. This data may be entered either via a
DAAS interface or via the control/display board.
ENTERING DATA INTO THE EEPROM
All the data is entered into the EEPROM on the production line using a computer with a DAAS interface.
In the field, the configuration only can be modified using a combination of buttons on the control/display
board.
TSE-P 04.00 EB
GENERAL INSTRUCTIONS
PROGRAMME VARIABLES
POWER FAIL
&
MACHINE PARAMETERS
STATUS
26/50
MACHINE
CYCLE
CONFIGURATION
599 34 22-16