Technical specifications
7.6 BIOS description
SIMATIC IPC227G
82
Operating Instructions, 06/2021, A5E50059933-AA
Meaning of the bits
Battery status register (read-only, address 404Dh)
Bit
Meaning
7
6
5
4
3
2
1
0
0 0
CMOS battery capacity is still sufficient.
0 1
CMOS battery capacity is exhausted (remaining capacity is suffi-
cient for approx. one month)
1 1
CMOS battery is empty
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
PCI register content:
NVRAM memory address (default
setting)
Length of the memory area
Address variable (depending
on the slot where NVRAM is
located)
Address is assigned dynamically
(depending on device configura-
tion)
80000 h
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.
