Douwe Egberts Cafitesse 700, Back Office Manual

Page: 242 / 265

July 2004
5K - 11
Functions - Power supply unit
and control system
K.3.3 Function: processor board MCM
• The processor board is plugged in on the
USER INTERFACE board.
• The processor board is supplied with 5 V of
stabilized direct voltage via the plug con-
tacts (1). (Fig. 1)
• The main processor (2) of the dispenser is
located on the bottom side of the processor
board. The main processor controls all
operations and forwards the corresponding
signals to the processors on the module
boards A, B and C and to the USER
INTERFACE board. (Fig. 1)
• The capacitor (3) on the top side of the
circuit board buffers the time setting over
the period of approximately one week.
(Fig. 1)
MCM data file system
Data required for starting the dispenser, the
default settings and the current settings for
operating the dispenser (e. g. beverage recipes,
software languages, etc.) and dispenser data
(e. g. counters, error log, etc.) are stored in a
flash file system on the MCM board. (Fig. 2)
When starting the dispenser, the data required
for operating the dispenser are loaded from the
flash file into a RAM file and thus provided for
the dispenser operation.
If settings (i. e. beverage recipes) are modified
in the programming mode during operation of
the dispenser, this is done initially in the RAM
file. When leaving the programming mode and
during a longer time of programming the modi-
fied data and settings are reloaded from the
RAM file into the flash file system.
When switching off the dispenser or in case of
a power failure, the remaining voltage is used to
reload possible modifications from the RAM file
into the flash file system. This is why no data
loss occurs in the event of a power failure. In
the event of a system breakdown, however, the
data can be lost.
Error 92
In case of a corrupt flash file system, error 92
can occur during initialization of the dispenser.
This error cannot be reset. To remedy this error,
a flash file system can be transmitted via a PC:
If the PC interface is connected during start of
the dispenser, and if the related program has
been started on the PC, the flash file systems
of the dispenser and the PC are compared and
transmitted from the PC to the dispenser if
required.
Fig. 1
Processor board, top side
Processor board, bottom side
1 2
3
MCM-circuit board
Flash file
system
System
Info
Data
Info
Log file
Counter
RAM file
Start up
Fig. 2
Cafitesse 700 - Functions - power supply and control system