Expanding and assigning parameters to the device
6.3 Memory modules
SIMATIC IPC847E
94
Operating Instructions, 10/2018, A5E43920357-AA
6.3
Memory modules
6.3.1
Usable memory modules
Combination options for memory modules
You can equip each device with 1, 2 or 4 memory modules of the same capacity. It is not
allowed to combine three different memory modules or mix of memory capacities.
This allows you to expand Rack PC memory up to 64 GB, of which you can use approx.
3.2 GB for the operating system and applications in case of 32-bit operating systems.
Depending on the number of memory modules used, these are plugged into defined slots on
the motherboard.
The slots are labeled on the motherboard.
Combination
option
Channel A (external)
Channel B
Maximum
expansion
Slot X19
DIMM1-1
Slot X190
DIMM1-2
Slot X20
DIMM2-1
Slot X200
DIMM2-2
Combination 1
4 GB / 8 GB / 16 GB
16 GB
Combination 2 4 GB / 8 GB / 16 GB
4 GB / 8 GB / 16 GB
32 GB
Combination 3
Combinations of three memory modules are not permitted
Combination 4 4 GB / 8 GB / 16 GB 4 GB / 8 GB / 16 GB 4 GB / 8 GB / 16 GB 4 GB / 8 GB / 16 GB
64 GB
Usable memory modules
●
DIMM DDR4 memory modules
●
Memory transaction rate 2666 MT/sec "unbuffered"
●
"without ECC" or "with ECC"
Conditions of use of memory modules
●
Memory is operated in dual-channel mode if two modules are installed.
●
Only modules of the same module organization 2Rx8 or 1Rx8 may be used per channel.
●
If expansion cards with their own memory, such as graphics cards, with 256 MB or more
are used, the memory that can be used for an operating system or applications may be
less than 64 GB.
●
Memory modules with ECC and without ECC may not be used in mixed operation.
●
Memory module with ECC can only be used in connection with Xeon processor.
●
In case of operating errors, it may be sufficient to remove one or two memory modules or
to use a memory module with lower capacity so that the physical memory expansion on
the motherboard and the reserved memory of the expansion card do not overlap.
See also
Open the device (Page 89)