4. Configuration
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Using the NX3020 CPU it is possible to insert up to two NX5000 modules in the project. By using
the NX3030 CPU it is possible to insert up to six. If it is used a CPU NX3020 or NX3030, it is
possible to configure a NIC Teaming pair, using up to the maximum number of modules allowed for
each CPU, such as the architecture shown in the Figure 4-11, where we have a NIC Teaming pair and
one independent Ethernet interface, using three modules.
In order to put together two NX5000 modules as a redundant pair, these two modules must necessary
occupy adjacent positions on the backplane rack and the checkbox “Redundancy of Communication”
from the module on the left must be selected, as show in the figure above Figure 4-12.
By doing this, the parameters edition of the module on the right is blocked. The parameters edited in
the module inserted on the left get common for the two modules.
On the other hand, clearing the “Redundant Communication” checkbox from the module on the left
causes the separation of the modules, which return to behave as individual modules without
redundant NIC Teaming.
Figure 4-12. NX5000 Redundancy Parameter
Protocols Configuration
Independent of the protocols used in each application, the Nexto Series CPUs possess some
maximum limits for each CPU model. There are basically two different types of communication
protocols: symbolic and direct representation mappings. The maximum limit of mappings as well as
the maximum protocol quantity (instances) is defined on Table 4-24:
MODBUS Mapping/requests (direct
representation/symbolic, respectively)
NETs – Clients or Servers instances
COM (n) – Master or Slave instances
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General