As fieldbus networks enter more and more into the mission critical domains of availability and redundancy of both the network path and the I/O devices, the pressure on fieldbus networks to deliver more is increasing. Omniflex has produced a number of solutions for demanding applications using its Conet Fieldbus Network and Maxiflex, its programmable I/O system platform. This is a fully redundant system comprising dual redundant network systems ie, dual master nodes, dual Conet networks and dual front end I/O nodes. (The figure shows the system makeup.)
The system is made up of a primary link and a secondary link. Each link includes a master node that is responsible for connecting the scada system to the I/O node in the same link. The master nodes are also the nodes responsible for ensuring the integrity of the entire system so that there is always communications between the scada system and an I/O node. In order to accomplish this, each master node is connected via Conet to a Conet NIM module that is fitted into the Maxiflex rack of the other master node. As the Conet NIM modules are electrically isolated from the Conet network, the primary Conet Lan and secondary Conet Lan are isolated from themselves, providing complete dual redundancy from the master nodes through to the I/O nodes.
The primary link is used by the scada system during normal operation. The primary master is continuously checking all relevant communication and I/O node status indicators to ensure the link is healthy. In the event of a failure in one or more status indicators, the primary system will flag this to the scada system and this condition will be detected by the secondary master node. At this point the secondary system will 'take control' of the communications link until the primary link is restored. Once the primary link is restored, the secondary link will 'release control' of the communications link to the primary system.
Both master nodes must be downloaded with the redundant link software for the system to operate. No redundant software is required to be downloaded to the front end I/O node thereby keeping these nodes free for any user application required.
A number of different solutions, including Ethernet with hot standby on applications for top ends, are available to suit application constraints imposed by the end user. Contact Omniflex directly to discuss your application.
Remote I/O modules provide flexible options for distributed applications
Fieldbus & Industrial Networking
Dinkle International is now stocking the iO-GRID NEMO industrial-grade remote input/output modules, offering support for five leading industrial Ethernet protocols and a range of discrete channel configurations for distributed automation applications.
Read more...Daudin expands fieldbus modular remote I/O series
Fieldbus & Industrial Networking
: The Dinkle iO-GRID X modular remote I/O family is now available, offering fieldbus coupler modules for major industrial Ethernet protocols, and over 20 types of I/O modules to help integrators and equipment builders create flexible, efficient control systems.
Read more...Siemens and HighByte partner to scale industrial AI Siemens South Africa
IT in Manufacturing Fieldbus & Industrial Networking
Siemens is expanding its Industrial Edge ecosystem through a partnership with HighByte, enabling customers to connect, contextualise and transform data from operational technology and information technology sources to build AI models and applications at scale.
Read more...Automotive Ethernet media converter
Fieldbus & Industrial Networking
HMS Networks has introduced its first automotive ethernet product under the PEAK brand. The PAE-Media Converter is a compact device designed to connect automotive Ethernet (100BASE-T1 or 1000BASE-T1) with standard Ethernet (100BASE-TX or 1000BASE-T) networks.
Read more...3D electrical systems design workflow for electromechanical innovation Siemens South Africa
Fieldbus & Industrial Networking IT in Manufacturing
Siemens has announced new 3D electrical design capabilities within its Capital software, enabling electrical and mechanical engineers to work concurrently in a shared 3D environment to reduce late-stage design changes and accelerate time to market for complex electromechanical products.
Read more...Long-distance signal delivery is critical to rail safety Omniflex Remote Monitoring Specialists
Fieldbus & Industrial Networking
A remote monitoring specialist explains why fibre optic technology is increasingly replacing copper cabling in safety-critical railway signalling systems.
Read more...Building efficiency into cement production with SCADA and IIoT Adroit Technologies
Fieldbus & Industrial Networking
For decades, Adroit Technologies has worked alongside leading cement producers, helping them gain greater visibility into their operations through advanced SCADA and IIoT solutions.
Read more...Loop signature Part 2-5: Interactive control systems Michael Brown Control Engineering
Fieldbus & Industrial Networking
Feedforward control was explained in the previous loop signature articles. One of the examples used was feedforward control of load changes on a heat exchanger when variations occurred in the flow of the process fluid through the exchanger.
Read more...Integrated automation systems in poultry feed production Adroit Technologies
Fieldbus & Industrial Networking
South Africa’s poultry industry is increasingly turning to advanced automation systems to optimise operations. Working in partnership with Adroit Technologies, leading poultry supplier Sovereign implemented the Mitsubishi Adroit Process Suite across a key feed production facility, creating a scalable, integrated system capable of supporting both current operations and future expansion.
While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.
printer friendly version