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10.2
Memory expansion
10.2.1
Installing memory modules
Memory expansion options
The motherboard features two memory slots under the bus module. You can install 667 MHz
SO-DIMM DDR2 memory modules, type PC2-5300, unbuffered, no ECC. This allows you to
expand Rack PC memory up to 4 GB, of which you can use approx. 3.2 GB for the operating
system and applications. You can install one or two modules.
Combination
1
2
Note
The modules can be inserted into any slot. Memory is operated in dual-channel mode if two
modules are installed.
Preparation
Disconnect the device from mains and unplug all cables.
CAUTION
The electronic components on the PCBs are highly sensitive to electrostatic discharge.
Always take appropriate precautionary measures when handling these components. Refer
to the ESD directives on handling electrostatic sensitive components.
SIMATIC Rack PC 847B
Operating Instructions, 06/2008, A5E02203168-01
Slot X19 (bottom)
256/512 MB / 1 GB / 2 GB
256/512 MB / 1 GB / 2 GB
Expansions and programming
10.2 Memory expansion
Slot X20 (top)
256/512 MB / 1 GB / 2 GB
Maximum
expansion
2 GB
4 GB
63
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