4. Configuration
65
An example of typical application for NX5000 module is the setting of a redundant HSDN (High
Speed Deterministic Network) for communication between different PLCs. Through this network,
several PLCs can exchange messages in an entirely segregated network to ensure determinism and
fast communication. Moreover, setting up this network as redundant with NIC Teaming pairs,
provides an excellent availability. To build a redundant HSDN, two NX5000 modules must be
inserted. Figure 4-11 shows an example of redundant HSDN using two NX5000 modules.
The Figure 4-11 also shows an example with one NX5000 module used isolated (without NIC
Teaming redundancy), inserted to the right of the other modules.
Figure 4-11. Simple and Redundant Ethernet Networks Using NX5000
The two first NX5000 modules from the backplane rack make up a redundant NIC Teaming pair
interconnected in two different switches (Ethernet HSDN A and Ethernet HSDN B). At some point,
these two switches must be interconnected so that there is connection between the two NIC Teaming
ports and greater availability (against double failures).
Such Ethernet architectures enable excellent availability against failures on Ethernet ports, cables and
switches.
A set of two Ethernet ports forming a NIC Teaming pair presents a unique IP address connected to
the pair of ports. Thus, a client such as a SCADA or MasterTool connected to a server on a PLC does
not need to concern about changing the IP address in case there is a failure in some of the NIC
Teaming ports.
Diagnostics indicate eventual failures that may arise in any of the NIC Teaming pair ports.
ATTENTION:
Both NX3020 and NX3030 CPUs support the NX5000 module and can put two NX5000 together as
an NIC Teaming pair.
Other HSDN
CPUs
(Normally
Redundant)
To Next Page
Loading...
General