Cabling Recommendations; High Availability Seamless Ring Operation - Siemens SIMATIC NET RUGGEDCOM RS950G Equipment Manual

Introduction
1.4 Cabling Recommendations
Do not dispose of devices at public disposal sites.
For environmentally friendly recycling and the disposal of devices, contact a certified
disposal company for electronic scrap or your Siemens contact.
For more information, refer to
view/109479891.
Note the different national regulations.
1.4

Cabling Recommendations

All copper Ethernet ports on RUGGEDCOM products include transient suppression
circuitry to protect against damage from electrical transients and conform with
IEC 61850-3 and IEEE 1613 Class 1 standards. This means that during a transient
electrical event, communications errors or interruptions may occur, but recovery is
automatic.
Siemens does not recommend using copper Ethernet ports to interface with devices
in the field across distances that could produce high levels of ground potential rise
(i.e. greater than 2500 V), during line-to-ground fault conditions.
1.5

High Availability Seamless Ring Operation

Parallel Redundancy Protocol (PRP) and High-availability Seamless Redundancy (HSR)
are two mechanisms defined by the IEC 62439-3 standard to provide hitless network
recovery. Unlike Spanning Tree Protocol (STP), which requires reconfiguration of the
active network topology over redundant physical links, HSR and PRP provide hitless
network recovery through the use of information replication.
4
https://support.industry.siemens.com/cs/ww/en/
RUGGEDCOM RS950G
Equipment Manual, 10/2023, C79000-G8976-1037-08