2. CONFIGURATION
2.
Configuration
This chapter explains how to determine the necessary modules to configure a local or remote bus. It’s advised to user the
reading of the technical characteristics documents and specific manuals, in order to allow the series devices in all its flexibility.
It’s advised the MasterTool IEC XE software utilization for system configuration. The list of all available products and its
documents is easily accessed and the configuration limits easily checked.
2.1.
Configuration Steps
A system can be dimensioned through the following configuration steps:
2.1.1.
Step 1 – Determine necessary I/O modules
Considering:
Solution with Nexto or Nexto Jet, evaluating the needs of modules hot-swap in application
Necessary I/O points quantity, regarding the process to be controlled
Group the I/O points considering its features: transistor output, relay output, sink inputs, source inputs, etc.
Chose the module type. According to the previous grouping.
Determine the number of modules of each type to satisfy the I/O points
Verify the CPU capacity
All modules technical characteristics that are needed must be checked, in order to certify they satisfy the application
2.1.2.
Step 2 – Determine necessary special modules and network interfaces
According to the system necessities, it might be necessary to use some special module, such as the redundancy link
module – NX4010 which is used in the Nexto Series half-cluster redundancy solution. For further information regarding
which modules are necessary for the half-cluster redundancy solution see Nexto Series CPUs User Manual – MU214605, CPU
NX3030 Redundancy chapter.
Besides the special modules, the necessity for fieldbus interface must be checked. Nexto modules list within this document
shows all available fieldbus interface modules.
2.1.3.
Step 3 – Determine CPU
The table below presents some available options.
Code
Description
NX3003
CPU with 1 Ethernet port, 1 serial channel, 14 digital inputs, 10 digital
outputs, local I/O modules support and integrated power supply
NX3004
CPU with 1 Ethernet port, 1 serial channel, remote rack expansion sup-
port and integrated power supply
NX3005
CPU with 1 Ethernet port, 1 serial channel, remote rack expansion sup-
port, integrated power supply and user web pages support
NX3010
High-speed CPU, 1 Ethernet port, 2 serial channels, memory card inter-
face and remote rack expansion support
NX3020
High-speed CPU, 2 Ethernet ports, 2 serial channels, memory card in-
terface and remote rack expansion support
NX3030
High-speed CPU, 2 Ethernet ports, 2 serial channels, memory card in-
terface, remote rack expansion and redundancy support
Table 4: CPU Models
It’s indicated to the user to verify all differences between the CPU options in order to make the best choice for his neces-
sities. The documents Nexto Series CPU Technical Characteristics - CE114100 and the Nexto Series CPUs User Manual -
MU214605 indicate the differences between the models.
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