Expansions and configuration
10.2 Memory expansion
SIMATIC Rack PC 840 V2
Operating Instructions, Edition 05/2006, A5E00248055-04
10-3
10.2
10.2
Memory expansion
10.2.1
Installing memory modules
Memory expansion options
The motherboard is equipped with 3 slots for memory modules. 184 pin DDR266 RAM chips
(PC2100), unbuffered, no ECC. This allows you to expand the memory capacity of your
Rack PC to a maximum of 2 GB. Either one, two or three modules can be installed.
Combination
Slot X3
Slot X4
Slot X5
Maximum
expansion
1
128/256/512MB/1GB
1 GB
2
128/256/512MB/1GB 128/256/512MB/1GB
2 GB
3
128/256MB
128/246MB
128/256/512MB/1GB 1.5 GB
Note
The modules can be installed in any slot. If 2x 512 MB or 2x 1GB oder 1x 512 MB plus
1x 1GB modules are installed, no further module is allowed to be installed, irrespective of the
memory.
Preparation
Disconnect the device from mains and unplug all cables.
Caution
The electronic components on the PCBS are highly sensitive to electrostatic discharge. It is
therefore vital to take precautionary measures when handling these components. Refer to
the directives for handling components which are sensitive to electrostatic charge.