Nvram Address Register; Bios Description; Overview - Siemens SIMATIC IPC227G Operating Instructions Manual

Technical specifications

7.6 BIOS description

Meaning of the bits
Battery status register (read-only, address 404Dh)
Bit
7
7.5.5.7

NVRAM address register

NVRAM occupies a 512 KB memory address area that can be read via PCI registers.
Meaning of the bits
NVRAM address register
PCI register address:
NVRAM base address register
Address variable (depending
on the slot where NVRAM is
located)
7.6 BIOS description
7.6.1

Overview

Parameterize your device in the BIOS Setup.
BIOS Setup program
The BIOS Setup program, or BIOS Setup for short, is located, together with the setup
parameters, in a FLASH block on the motherboard.
Change the setup parameters of the device in the BIOS Setup, e.g. system time or boot
sequence.
82
6 5 4 3 2 1
0 0
0 1
1 1
Meaning
0
CMOS battery capacity is still sufficient.
CMOS battery capacity is exhausted (remaining capacity is suffi-
cient for approx. one month)
CMOS battery is empty
PCI register content:
NVRAM memory address (default
setting)
Address is assigned dynamically
(depending on device configura-
tion)
Length of the memory area
80000 h
Operating Instructions, 06/2021, A5E50059933-AA
SIMATIC IPC227G