User Manual

6 MDS entraNET 900 System Guide (Preliminary) MDS 05-4055A01, Rev. A
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Figure 1-2. Typical wireless LAN
1.2.2 Multiple Protocols and/or Services
Prior to the introduction of the entraNET 900, two radios were often
required to service two different types of devices (typically connected to
different SCADA hosts). An entraNET 900 provides this functionality
through a single AP radio. Each of the two groups of remote radios can
be connected via IP to different SCADA hosts, transporting different (or
the same) protocols. Both data streams are completely independent and
the transceiver provides seamless simultaneous operation as shown in
Figure 1-3 on Page 6.
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Figure 1-3. Multiple Protocol Network
By using a single AP the cost of infrastructure deployment is cut in half,
with only one antenna, one feedline, and one lightning protector
required. Other cost reductions come from the system as a whole,
iNET 900
Remote
iNET 900
Remote
iNET 900
Acess Point
iNET 900
Remote
iNET 900
Remote
LAN
LAN
WAN/LAN
LAN
LAN
PC Running
NetView
SCADA Host
Total Flow
Access Point
Serial emote
Serial Remote
SCADA Host
Modbus/IP
Ethernet
Remote
Access Point
RTU
EIA-232
EIA-232
TCP/IP
ROUTER
HUB
Serial
Device
HUB
HUB
HUB
WAN
Ethernet
Device