Siemens SIPROTEC 7SK80 Manual page 22

Introduction
1.2 Application Scope
Messages and Measured Values; Recording of Event and Fault Data
The operational indications provide information about conditions in the power system and the device. Measure-
ment quantities and values that are calculated can be displayed locally and communicated via the serial inter-
faces.
Device messages can be assigned to a number of LEDs on the front cover (allocatable), can be externally pro-
cessed via output contacts (allocatable), linked with user-definable logic functions and/or issued via serial in-
terfaces.
During a fault (system fault) important events and changes in conditions are saved in fault protocols (Event Log
or Trip Log). Instantaneous fault values are also saved in the device and may be analized subsequently.
Communication
The following interfaces are available for communication with external operating, control and memory systems.
The USB DIGSI interface on the front cover serves for local communication with a PC. By means of the SIPRO-
®
TEC 4 operating software DIGSI
terface, such as the specification and modification of configuration parameters and settings, configuration of
user-specific logic functions, read-out of operational and fault messages as well as measured values, read-out
and displaying of fault records, inquiry of device conditions and measured values, issuing of control commands.
Depending on the ordered variant, additional interfaces are located at the bottom of the device. They serve for
establishing extensive communication with other digital operating, control and memory components:
Port A serves for DIGSI communication directly on the device or via a network.
Furthermore, the connection of one or two thermoboxes for entering external temperatures can be provided via
port A (via Ethernet) or port B, e.g. via RS485.
Port B serves for central communication between the device and a control center. It can be operated via data
lines or fiber optic cables. For the data transfer, there are standard protocols in accordance with IEC 60870-5-
103 available. The integration of the devices into the SINAUT LSA and SICAM automation systems can also
be implemented with this profile.
Alternatively, there are further coupling options possible with PROFIBUS DP and the DNP3.0 and MODBUS
protocols. If an EN100 module is available, it is also possible to use the IEC61850 protocol.
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®
, all operational and evaluation tasks can be executed via this operator in-
SIPROTEC, 7SK80, Manual
E50417-G1140-C344-A4, Release date 08.2010