Wireless Network - Important Concept; Segment Id; Address; Encryption And Replay Protection - Siemens Bewator Entro Series Installation Manual

System description
3.4 Wireless network – important concept
3.4.1

Segment ID

3.4.2

Address

3.4.3

Encryption and replay protection

3.4.4

Routing

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The Segment ID consists of four digits.
Every SR35i is identified by a unique four-digit number known as the Segment ID.
All wireless units related to this particular controller are configured with its Segment
ID.
As soon as an RF9 or RF30-EM is configured with the same Segment ID as the
SR35i it strives to communicate with that unit.
Note that in some proprietary systems using Zigbee wireless technology the ex-
pression PAN-ID (Private Area Network Identifier) is used for Segment ID. This
wireless technology is known as Zigbee (IEEE 802.15.4).
The Segment ID must not be the same as a PAN ID in another Zigbee system
nearby.
Every unit in a Bewator Entro network must be identified by a unit address. Each
unit address is visible in the Bewator Entro software.
Each SR35i segment controller is shown as Cxx, where xx is its address. Each
RF9 or RF30-EM is shown as Cxx:Wyy (or Cxx:Ry) where xx is the address of its
SR35i and yy is the address of the wireless unit.
The Installation key, which is found in the SR35i, is the base for encrypting the
wireless communication.
There is also an integrated replay protection that eliminates any attempt to manipu-
late the doors.
All units connected to a wireless segment always "strive" to reach the highest level
– that is the SR35i. If this fails a RF9 will be used for forwarding the information (to
SR35i).
Up to four RF9 routers can form a communication chain between a SR35i and an
RF30-EM. Thus a message from the segment controller is allowed to "jump" a
maximum of five times before reaching a door unit.
03.2014