Siemens SIMATIC IPC647E Operating Instructions Manual page 98

Expanding and assigning parameters to the device
6.3 Memory modules
4. Insert the memory module in the slot perpendicular to the motherboard.
5. Press evenly on both sides of the memory module in order to prevent tilting until both
interlocks audibly engage.
The memory module is inserted correctly if less than 1 mm of the gold contacts is visible
evenly across the entire length of the module.
6. Close the device.
Display of a changed memory configuration
A new memory configuration is detected automatically. The allocation of the "base memory
and extended memory" is automatically displayed when you switch on the device.
See also
Removing/installing the bus frame (Page 133)
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Operating Instructions, 11/2018, A5E45589180-AA
SIMATIC IPC647E