ECShell engineering software
Manual – ECC-DFC field bus controller
8.5.3. Connections
The Connections help program uses ECShell in order to instruct a certain module
to establish a logical connection with another module that it would otherwise not
have established during the auto configuration procedure. In applications with
more than one subnetwork, the node of a subnetwork the is furthest downstream
is logically linked with the node of another network that is the furthest upstream in
this way.
Connecting two networks with each other
Figure 39 shows a typical delimitation between two subnetworks. The node of the
first subnetwork that is the furthest downstream has IP address 192.168.27.25,
and the node of the second network that is the furthest upstream has IP address
192.168.25.20.
Figure 39 Example of delimitation between two subnetworks
By connecting a crossover Ethernet cable between these separated nodes and
using the ECShell engineering software to set up the “logical” connection you can
achieve a smooth flow of information between the two networks. This is shown in
figure 40.
Figure 40 Example of separated subnetworks with cable
The procedure requires that you instruct node 192.168.27.25 to transport the
load to node 192.168.25.20. You also have to instruct node 192.168.25.20 to
accept the load from node 192.168.27.25.
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