Maintenance BERGHOF
Automation
82 DC1000_HB_en_2D0982003ZD00.doc
2VF100109FE01.doc
6.1.
Real-Time Clock with Backup Battery
The DIALOG CONTROLLER is equipped with a real-time clock.
Setting the clock
Use either the web configuration or the CoDeSys “BGHSysLibRtc.lib” library.
Power supply
A battery is required to supply power to this clock.
Charge level
The DIALOG CONTROLLER monitors the backup battery’s charge level.
The current battery charge state can be displayed using the CoDeSys “BGHSys-
LibRtc.lib” library.
Backup battery voltage values which
exceed
3.2 V
or
are below 2.0 V
will affect
the real-time clock’s function.
Overvoltage: Check the battery type and device hardware.
Undervoltage: Replace the battery.
The following battery charge levels are important:
3.2 Volt
Typical value for a new battery.
This value may not be exceeded
!
3.0 Volt
Nominal battery voltage
2.5 Volt
The battery should be replaced.
2.0 Volt
The battery must be replaced immediately in order to ensure the
proper function of the real-time clock.
EXPLOSION HAZARD
EXPLOSION HAZARD!
Never throw batteries (new or dead) into a fire, never attempt to solder at any
point on the battery case and never attempt to recharge batteries. Do not attempt
to dismantle or disassemble batteries.
Replace batteries only with batteries which have the same rating.
Make sure the battery is facing the right way when installed.
