Siemens 7SR12 Argus - Ethernet Network Redundancy IEC 61850; RSTP - Rapid Spanning Tree Protocol

7SR11 & 7SR12 Installation Guide
Chapter 5 Page 30 of 32 ©2017 Siemens Protection Devices Limited
6.3 Ethernet Network Redundancy IEC 61850
The EN100 module is used on Reyrolle devices to provide Ethernet/IEC61850 functionality. The EN100 supports
RSTP, PRP & HSR redundancy protocols.
All 7SR11 and 7SR12 IEC61850 variants are delivered with the EN100+ (Plus) module and firmware 4.21 or later.
The earlier EN100 (standard) modules are not used in the 7SR11 and 7SR12.
The EN100 module firmware can be updated by connecting to the relay via the rear Ethernet port. For more
information on connecting to the relay via the Ethernet port, please see the Reydisp Manager User guide.
Depending on the EN100 module type and Firmware version, the following protocol options are available:
Interface Type
EN100
Firmware
Line Mode
Switch Mode
RSTP
OSM
PRP
HSR
Electrical RJ45 EN100+
4.08 or earlier





Electrical RJ45 EN100+
4.21and later





Optical EN100+
4.08 or earlier





Optical EN100+
4.21and later





Table 2: EN100 Redundancy availability
6.3.1 RSTP – Rapid Spanning Tree Protocol
RSTP is a redundancy protocol with a minimal response time that has been standardized in IEEE-802.1D (2004).
The reconfiguration time depend on the topology and start at 50ms.
RSTP need to be enabled on the device within Reydisp Manager (See Reydisp Manager user guide). Network
rings with up to 30 devices is possible.
Figure: 6.3-1 RSTP Ethernet Network Ring Configuration