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ET-2200 Series Ethernet I/O Modules
5.5.2
Application of spreading the load (DIO)
Original structure
Modbus TCP * 9
The original architecture on the left does not use the data concentrator feature, the host has to
connect with all devices to exchange data (9 Modbus TCP connections in this case), and more
devices will make the host overloaded.
The new architecture on the right uses the data concentrator feature on the ET-2200 series DIO
module. The Pair-connection function supports up to 16 IP connections. The host can obtain the
signals written in the data concentrator from Device#1 - #8 by connecting to the ET-2200 series
DIO module. The number of Modbus TCP connections to the host is reduced from 9 to 1, which can
effectively spread the load.
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Overloaded
ET-2200 (DO)
10.0.8.100
10.0.8.10 (DI)
10.0.8.11 (DI)
10.0.8.12 (DI)
10.0.8.13 (DI)
10.0.8.14 (DI)
10.0.8.15 (DI)
10.0.8.16 (DI)
10.0.8.17 (DI)
New solution
Spread the load
Modbus TCP * 1
ET-2200
+
Concentrator
(DO)
10.0.8.200
Device#1 (DI)
10.0.8.10
Device#8 (DI)
10.0.8.17
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