MERak
MMk-656
Compact Emergency Telephone for Lifts
Rev. M1.5 – S2.5
©
MERak. All rights reserved
Instruction and Connection Manual
12 of 20
Fig. 1: Status flow diagram during boot and insertion of SD
The set boots and reads the parameters stored in the telephone's internal flash memory, and if it
detects that an SD card is present, it will try to read the parameters from the file CONFIG.CFG.
Then, one of three things can happen:
The file CONFIG.CFG is found and the set is updated with the new parameters. Likewise, the
telephone flash memory parameters are overwritten by those from the SD card. The set
plays a message confirming that it has been updated.
The file CONFIG.CFG is not found on the SD card. One is created on the SD card using the
previous parameters from the telephone flash memory.
The file CONFIG.CFG is damaged or the data are incorrect. No action is carried out and the
update error is notified by means of a blinking red status LED.
In this way, if a card from a different set is inserted into this one, the parameters configured in
the old set
are automatically copied to the new one
, with no additional action being carried out.
For example, it might be very useful to use an SD card with parameters programmed as a master
to automatically programme new sets rapidly and avoiding programming errors.
