Janitza Prodata 2 5224001 Data Sheet

43

The internal clock is fed from the supply voltage. 
If the supply voltage fails then the clock is powered by 
the battery. 
The clock provides date and time information, e.g. for 
the records and events.

The life expectancy of the battery is at least 5 years 
with a storage temperature of +45 °C. The typical life 
expectancy of the battery is 8 to 10 years. 

The battery status (full capacity, undervoltage, no capacity) 
can be read via the Modbus (address 4942) / Ethernet using 
the GridVis software. If the battery is exhausted and no 
time synchronisation (NTP) is set, the software takes 
the last valid time stamp from the memory and resumes 
from there.

The following chapter provides information about 
changing the battery.

Modbus
Address

Bit

Status description

4942
(short,
16-bit)

0

•  Battery capacity exhausted
•  Clock has stopped and must 

be set if necessary

•  Battery should be replaced

1

•  Battery capacity nearly 

exhausted

•  Battery should be replaced

2

•  Battery capacity low
•  Battery should be replaced