Siemens SIMATIC Box PC 820, Manual

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2-5
Box PC 820 / PC FI45 V2, Manual
A5E00051531-03
2.3 Memory
If ECC submodules are not mixed up with ECC submodules, the memory will work
without ECC fuse or correction.
Organization Size in MByte Type Access-Time/
Frequency
8Mx64 64 SDRAM PC100
16Mx64 128 SDRAM PC100
32Mx64 256 SDRAM PC100
8Mx72 64 SDRAM with ECC PC100
16Mx72 128 SDRAM with ECC PC100
32Mx72 256 SDRAM with ECC PC100
Modules with a chip size up to 128 Mbit are supported.
Replacing/Upgrading Memory Cards
How to Proceed
Please refer to the notes in Chapter 1 of the User’s Guide supplied and read
carefully the ESD guidelines.
1. Switch off the device and separate from the mains.
2. Unscrew the housing and remove the cover (see Chapter 1.3.5).
3. Plug or unplug the DIMM submodules. The submodules can easily be removed
by pressing down the levers on the left and right of the base.
4. Make sure that the modules are correctly plugged in.
5. Reassemble the unit in reverse order.
!
Caution
Risk of short circuit!
The cards must be installed correctly, otherwise the motherboard or the card might
be destroyed.
Make sure that the contacts of the card and socket are on top of each other.
Motherboard
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