Battery Status Register; Bios Description; Overview - Siemens SIMATIC IPC377G Operating Instructions Manual

Bit
4
3 to 0
8.5.5.5

Battery status register

The status of the CMOS battery is monitored; the status (two-tier) can be read from the
battery status register.
Meaning of the bits
Battery status register (read-only, address 404Dh)
Bit
7
8.6

BIOS description

8.6.1

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.
SIMATIC IPC377G
Operating Instructions, 07/2022, A5E51366314-AB
Read/Write Meaning of the bits
state
Read/Write Watchdog Timer I status bit:
•
•
Read/Write Not used for watchdog
6 5 4 3 2 1
0 0
0 1
1 1
0: Watchdog Timer I is running.
1: Watchdog Timer I issues time-out event.
Meaning
0
CMOS battery capacity is still sufficient.
CMOS battery capacity is exhausted (remaining capacity is
sufficient for approx. one month)
CMOS battery is empty
Technical specifications
8.6 BIOS description
87