Cabling Recommendations; Protection On Twisted-Pair Data Ports; Gigabit Ethernet 1000Base-Tx Cabling Recommendations - Siemens SIMATIC NET RUGGEDCOM RSG2488F Installation Manual

Introduction
1.5 Cabling Recommendations
NOTICE
Worn, damaged or missing seals must be replaced immediately.
Replacement seals are available for purchase from Siemens. For more information,
contact a Siemens Sales representative.
There are three ways to determine if a security seal has been tampered with:
•
•
•
For information about the placement of security seals, refer to the
RUGGEDCOM RSG2488F FIPS 140-2 Non-Proprietary Security Policy [https://sup-
port.industry.siemens.com/cs/ww/en/view/109757984]
1.5

Cabling Recommendations

Siemens recommends using SIMATIC NET industrial Ethernet shielded cables for all
Ethernet ports.
1.5.1

Protection On Twisted-Pair Data Ports

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 electri-
cal event, communications errors or interruptions may occur, but recovery is auto-
matic.
Siemens also does not recommend using copper Ethernet ports to interface with de-
vices 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.
1.5.2

Gigabit Ethernet 1000Base-TX Cabling Recommendations

The IEEE 802.3ab Gigabit Ethernet standard defines 1000 Mbit/s Ethernet commu-
nications over distances of up to 100 m (328 ft) using all 4 pairs in category 5 (or
higher) balanced, unshielded twisted-pair cabling. For wiring guidelines, system de-
signers and integrators should refer to the Telecommunications Industry Association
(TIA) TIA/EIA-568-A wiring standard that characterizes minimum cabling performance
specifications required for proper Gigabit Ethernet operation. For reliable, error-free
data communication, new and pre-existing communication paths should be verified
for TIA/EIA-568-A compliance.
4
The seal is cut or torn
A pattern is left on the device when the top layer of the seal is removed
Residue left by the seal is visible on the device under ultra-violet light
RUGGEDCOM
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RUGGEDCOM RSG2488F
Installation Manual, 11/2019, C79000-G8976-1351-05