7 sram address register – Siemens Simatic Industrial PC IPC427C User Manual

Page 142

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Detailed descriptions

16.4 I/O Address Areas

SIMATIC IPC427C

142

Operating Instructions, 04/2009, A5E02414743-01

16.4.7

SRAM address register

The battery-buffered SRAM uses a 2 MB memory address area, which can be read via the

PCI register.

Meaning of the bits

SRAM address register
PCI register address:
SRAM base address register

PCI register content:
SRAM memory address (default)

Length of the memory area

8010 2010h

9040 0000h

Address is assigned dynamically

(depending on device)

20 0000h

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