ALTUS Nexto Series User Manual

6. REDUNDANCY WITH NX3030 CPU
To interrupt the process control, executing the procedure described in the Offline Download of Modifications with
Process Control Interruption section
Use the PLC and the PROFIBUS networks redundancy in order to avoid interruption of the process control, even with
the necessity to execute offline downloads in each half-cluster (PLCA or PLCB). A procedure to reach this objective
is described in the Exploring the Redundancy for Offline downloading of Modifications without Interruption of the
Process control section
6.5.4.1. Modifications which Demand Offline Download and the Interruption of the Process Control
The following modifications in a project will make it impossible to be downloaded in a redundant system with no interrup-
tion of the process control:
Modifications in the redundant memory areas (changes in the Redundancy Parameters from the module NX4010)
ATTENTION
Will not be possible to change the size of redundant memory areas without the interrupt of
the process control. Thus, these areas must be carefully planned and previously configured.
6.5.4.2. Modifications which Demand Offline Download
The following modifications demand offline downloads in the PLC where MasterTool is connected:
To add or remove devices from the device tree, such as:
• Modules in the main rack (NX5001 PROFIBUS masters, NX5000 Ethernet interfaces, etc.)
• Remotes in PROFIBUS networks
• I/O modules in remotes in PROFIBUS networks
• MODBUS instances
To modify parameters inside devices from the device tree, such as:
• IP addresses and other Ethernet interfaces parameters
• PROFIBUS master parameters
• PROFIBUS remotes parameters
• I/O modules parameters inside PROFIBUS remotes
To modify a task’s period
Project update due to MasterTool IEC XE programmer Update
6.5.4.3. Modifications which Allow Online Download
A priori, the modifications not mentioned in the sections Modifications which Demand Offline Download and the Inter-
ruption of the Process Control and Modifications which Demand Offline Download, allows online download.
Even this way, the modifications which allow online download in the PLC where MasterTool is connected are listed below.
These modifications are valid for variables, POUs and GVLs, redundant or not:
To add POUs from the program type, if these POUs don’t need to be associated to any task
To remove POUs from the program type, if these POUs aren’t associated to any task
To add or remove POUs from the function or function block type
To modify the code of any type of POU (program, function or function block)
To add or remove symbolic variables in any POU type (program, function or function block)
To add or remove instances of function blocks in POUs from the program or function block type
To add or remove GVLs
To add or remove symbolic variables or instances of function blocks in GVLs
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ALTUS Nexto Series Specifications

General

Brand	ALTUS
Model	Nexto Series
Category	Computer Hardware
Language	English