Fieldbus isn’t really one thing but more of a collection of things. Fieldbus is a group of protocols that are used in the industrial arena.
The Fieldbus protocols have been standardized as IEC61158.
Prior to Fieldbus, industrial controller systems were connected using RS232 serial communications.
As you know, serial communications allowed only two devices to communicate.
Whereas today, the Fieldbus connections are more closely compared to the typical Ethernet connections where you can connect multiple field devices to a single connection point that would then connect to the controller.
The connections to the Fieldbus components, with the exception of the field devices themselves, are single cable connections. This connection scheme may vary depending on the Fieldbus protocol that you are using.
This type of field device connection saves on wiring runs that would have to go all the way back to the controller.
As you can see, this type of device wiring would have many benefits when the distance is an issue.
As you can imagine, your controller system will need to have a communications module that will be able to establish communications with the field devices.
In the case of ControlNet, you would need a ControlNet module, Profibus would need a Profibus module, etc.
By Mondi Anderson
Posted on Jan 7, 2019
5 ACTIONABLE TIPS FOR GETTING A PLC PROGRAMMING JOB WITH NO EXPERIENCE The mindset that helped me find my ideal job as a PLC programmer with NO experience. Working as a PLC Programmer is one of the most attractive and highest paying jobs in the engineering industry....
In previous articles, we have talked about variable frequency drives (VFD) and soft starters. If you need a refresher on the detailed working of either a VFD or Soft Starter be sure to look back at those articles by clicking the links below. What is a VFD? What is a...
In this video and article, we are going to do a deep dive into the DCS and discuss some of the why’s and how’s associated with the DCS. Let’s first clarify for the purpose of this lesson, what we mean by DCS. Over the years, the term DCS has evolved from the original...
RealPars is the world's largest online learning platform for automation engineers.
+31 10 316 6400
Mon - Fri 8:30 am to 5:30 pm (CET)
Rotterdam Science Tower, Marconistraat 16,
3029 AK Rotterdam, The Netherlands
© 2019 RealPras B.V. All rights reserved.
This project is approved and supported by The Netherlands Enterprise Agency