www.janitza.de
77
UMG 96-PA / UMG 96-PA-MID / UMG 96-PA-MID+
14.12 Time synchronization
The device has 3 options for time synchronization.
Via:
1. A time pulse on
digital input 2
of the device
(see section „13.13.1 Digital inputs“ on page
58).
2. The NTP protocol of a time server on the
Ethernet interface
(device with module and
connection to an Internet PC with the GridVis
®
software installed).
3. The
RS-485 interface
(Modbus).
14.12.1 Digital input 2
Configuration of the time synchronization via
digital input 2 of the measurement device can be
carried out in the GridVis
®
software.
First connect a time pulse to digital input 2, e.g.
the pulse from the electric utility or a GPS timer
(GPS radio receiver for receiving and processing
the GPS time signal; available as Janitza acces-
sory).
14.12.2 Ethernet interface - measurement
devices with an Ethernet module
The configuration of time synchronization with the
NTP time server can be carried out in the GridVis
®
software.
To do so, connect your measurement device with
module via the Ethernet interface to an NTP serv-
er on the Internet or in the local network.
·In the device configuration of the GridVis
®
soft-
ware, activate the time synchronization via NTP
(external time server).
·Then configure the time synchronization via
an NTP time server, e.g. from PTB (Physika-
lische-Technische Bundesanstalt):
- ptbtime1.ptb.de
- ptbtime2.ptb.de
- ptbtime3.ptb.de
14.12.3 RS-485 interface (Modbus)
Configuration of time synchronization via the RS-
485 serial interface (Modbus) can be carried out in
the GridVis
®
software.
In this case, a time pulse transmitted from the
GridVis
®
software synchronizes the device time.
14.12.4 Warning alert “Time synchronization”
After 3 days with no time synchronization, the
device reports "Clock not synchronized" in the
display.
As described in section „14.12 Time synchroni-
zation“ on page 77, use one of the 3 options to
synchronize the time!
NOTE
After 7 days without a time synchronization,
the device records invalid measurement
data, i.e. these measurement data cannot
be used for accounting in accordance with
the German Renewable Energy Sources Act
(EEG) e.g. when measuring with the UMG-96-
PA-MID+!
Fig.
Display “Clock not synchronized”
