Serial Interfaces - Siemens SIPROTEC 7SA6 Manual

Distance protection relay for all voltage levels

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Table of Contents

Serial Interfaces

C53000-G1176-C156-2

Devices in the SIPROTEC

The system interface on the back panel of the device is for connection to a central

master control system. Depending on the type and the version of the device the fol-

lowing protocols are available:

• IEC 60870–5–103,

• PROFIBUS FMS,

• PROFIBUS DP,

• DNP3.0 Level 2,

• MODBUS ASCII/RTU

The time control interface on the back panel of the device is used for connection of

a radio-controlled clock (see Section 4.13).

The operating interface is used for on-site connection to a PC, on which DIGSI

is installed. Via this interface the settings can be loaded and all DIGSI

can be applied, e.g. read-out of oscillographic fault records or event logs.

The service interface on the back panel is for connection to a PC of remote diag-

nostic facilities, e.g. DIGSI

erations are possible via this interface.

In the DIGSI

4 interface settings window (under "Serial Ports") there are, among oth-

er items, settings for:

− transmission protocols and

− transmission speeds.

The system interface can be equipped with different modules for connection to other

devices via optical fibres, RS485 (EIA485) bus or RS232 interface.

An example of how to proceed during the configuration of an IEC-interface is shown

on the next page. In Chapter 5 there are more examples concerning the configuration

of protocols.

4 family can be equipped with up to four serial interfaces.

4 via modem and/or a star connection. All DIGSI

4 operations