User Manual B-Net 93 60
Mounting and installation
01/2006
© Kaba Benzing GmbH
39
5.7 Hardware
options
5.7.1
BEX400 memory expansion unit
The BECO500 CPU unit is equipped with 1 MB internal SRAM. With the BEX400
memory expansion unit the memory space for data can be expanded with 4 MB to
a total of 5 MB.
The SODIMM socket for the memory module is located on the BEX100 board.
NOTICE!
The BEX400 memory expansion unit is SRAM. By using DRAM or S-DRAM PC
memory modules, the BECO500 CPU unit can be damaged or destroyed.
During mounting and demounting of the BEX400 memory expansion unit, the
ESD protective measures must be considered.
Fig. 25: BEX400 Memory Expansion Unit
1
BEX101 board
4
BECO500 CPU unit
2
BEX400 memory expansion unit
5
Buffer battery
3 SODIMM
socket
NOTICE!
The SRAM sector serves as main memory with file system.
Removing the BEX400 memory expansion unit or the buffer battery on the
BECO500 CPU unit in off-circuit state, leads to data and formatting loss.
After the memory extension has been mounted, the SRAM area must be newly
formatted. This takes place automatically when performing a cold start. Refer to
chapter 6.3.3.
