1 Introduction
20
7UM61 Manual
C53000-G1176-C127-3
S e r i a l I n t e r f a c e s A serial operator interface in the front cover is provided for local communication with
a PC, using the operating program DIGSI
®
4. This permits convenient operation of all
functions of the device.
A serial service
interface can likewise make communication via PC with the device
possible using DIGSI
®
4. This is especially well suited for dedicated connection of the
devices to the PC or for operation via a modem. The service interface can be also
used for connecting a RTD-Box (see chapter 2.32)
All data can be transferred to a central control or monitoring system via the serial
system
interface. This interface may be provided with various protocols and physical
transmission modes to suit the particular application.
A further interface is provided for time synchronization
of the internal clock through ex-
ternal synchronization sources.
Further communication protocols can be implemented via additional communication
protocols.
Power Supply The functional units described are supplied by a power supply PS with the necessary
power in the different voltage levels. Voltage dips may occur if the voltage supply
system (substation battery) becomes short-circuited. Usually, they are bridged by a
capacitor (see also Technical Data).
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