RF Technologies ART400, Инструкция по установке, эксплуатации и программированию

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Commercial In Confidence
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3.5 VIEW SHOWING MEMORY EXPANSION BOARD
3.6 EXPANSION MEMORY CARD
The expansion memory card contains FLASH ROM, RAM and a control PIC processor,
it can be used for three different functions as outlined below:
3.6.1 Firmware download tool
During production or firmware changes, the card can be loaded with the required firmware
and plugged into the port to transfer the new firmware upgrades or changes
.
3.6.2 Additional memory
The processor has 128K of memory from which it executes its program which is plenty for
most applications. If insufficient memory is available the card can provide additional
memory of up to 512k, programs can then be downloaded and interchanged as required.
3.6.3 Remote firmware download module
The programmable parameters of the radio are stored in EEPROM and can be changed via
the serial port or over the air. However, should new firmware be required it normally
involves changing out OTP’s or memory devices. The Flash memory device in the ART
allows upgrades or changes to be easily achieved, simply by over writing the memory.
Unfortunately the processor cannot over write its own flash memory while still being in
operation so the memory board is used to store new firmware and under the control of an on
board PIC processor will down load the new code safely to the main flash processor.
Upgrades can take place over the serial port or over the radio link which is a very desirable
feature for large networks, as all changes can take place from the base controller, with out site
visits.