Siemens SIMATIC RI 45 PIII Series, Manual

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2-5
RI 45 PIII, Manual
C79000-G7076-C817-01
2.3 Memory
If ECC submodules are mixed with non-ECC submodules, the memory will
work without an ECC algorithm or correction.
Organization Size in Mbytes Type Access
Time/Freq.
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 128Mbit are supported.
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 supply voltage.
2. Unscrew the housing and remove the cover (it is not necessary to remove
the two screws on top of the front, just release them).
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.
Replacing /
Upgrading Memory
Cards
How to Proceed
Motherboard