ALTUS Nexto Series User Manual

6. REDUNDANCY WITH NX3030 CPU
Redundant CPU General Features
PROFIBUS Network and Vi-
tal Failures Configuration
The CPU supports up to 4 simple PROFIBUS networks or
up to 2 redundant PROFIBUS networks. It’s also possible to
configure if each PROFIBUS network failure is considered
vital (causes switchover) or not.
Ethernet Network and Vital
Failures Configuration
The CPU supports up to 8 simple Ethernet networks or up
to 4 redundant Ethernet networks (considering the NX3030
front interfaces). It’s also possible to configure if each Eth-
ernet network failure is considered vital (causes switchover)
or not.
Single and cyclic user task
Only one user task is allowed, called MainTask. This task is
cyclic.
Main POU programs: Non-
SkippedPrg and ActivePrg
At a redundant project creation, MasterTool generates auto-
matically two empty POU programs, which must be filled
by the user:
- NonSkippedPrg: this POU is executed in both CPUs
(PLCA and PLCB), independent on the redundancy state
(Active or Inactive). It’s used for diagnostics and special
commands management.
- ActivePrg: this POU is executed only in the Active CPU
and is used for the final user’s process control.
Table 204: General features of a redundant CPU
6.2.7. Purchase Data
The minimum configuration for a redundant CPU implies on the purchase of the following modules:
Two racks, which must be chosen between the four available models according to the modules to be installed:
• NX9000: 8 positions (4 double modules)
• NX9001: 12 positions (6 double modules)
• NX9002: 16 positions (8 double modules)
• NX9003: 24 positions (12 double modules)
Two NX8000
Two NX3030
Two NX4010
Two AL-2319
Furthermore, it may be necessary to purchase the following additional modules:
One PX2612
One AL-2317/A
One AL-2317/B
Two modules NX5001 for each simple PROFIBUS network
Four modules NX5001 for each redundant PROFIBUS network
Two modules NX5000 for each additional simple Ethernet network
Four modules NX5000 for each additional redundant Ethernet network (NIC Teaming)
ATTENTION
It can be installed up to 4 PROFIBUS modules in each half-cluster. This means that we can
configure up to 4 simple PROFIBUS networks or up to 2 redundant PROFIBUS networks.
278

ALTUS Nexto Series Specifications

General

Brand	ALTUS
Model	Nexto Series
Category	Computer Hardware
Language	English