Talk:Fieldbus

message: I updated and enlarged the standard section and removed all parts which are now redundant. Give me some time to go through the other sections...--Felser (talk) 14:00, 11 May 2020 (UTC)
thread_title:  Rewrite 

message: Isn't the generic term really "field bus" rather than "fieldbus"? Also, this page seems to be describing just one instance of the generic concept of a field bus. The Controller Area Network bus would be another example of a field bus. Unfortunately, I'm not an expert.
Correct -> it should read field bus 
Kramer-Wolf 09:26, 26 February 2007 (UTC)
thread_title:  Field bus 

message: What is the unique difference between field bus technology and regular buses and computer networks? --Abdull 14:13, 11 March 2007 (UTC)
thread_title:  Different? 

message: I was under the impression that in general, digital signals are less susceptible to noise than analog, because any amount of noise will affect the transmitted analog signal, whereas digital signals are only affected if the magnitude of the noise is comparable to the quantization level of the signals.  Why would this be different for field bus?
192.75.48.150 20:51, 30 April 2007 (UTC)
thread_title:  Disadvantages - noise 

message: In the article:
"Currently the issue stopping most Ethernet fieldbus implementations is the availability of device power. Most industrial measurement & control devices need to be powered from the bus and Power-Over-Ethernet (PoE) does not deliver enough."
First of all, most of the traditional fieldbusses do NOT supply bus power. Only DeviceNet and ASI, and perhaps one more fieldbus can supply bus power.
The highly popular profibus does not.
So I do not agree that the availability of bus power is what is limiting Ethernet acceptance.
Secondly, Power over Ethernet can deliver 13 Watts of power. This is more than enough for any bus powered field device. So even the second claim that PoE does not deliver enough is simply false.
I would say that Ethernet acceptance is more likely limited by the higher higher prices, the impractical star-structure of Ethernet networks, limited availability of field devices with Ethernet support (Profinet IRT, EtherCAT, Powerlink), questionable determinism (Ethernet/IP, Modbus, Profinet IO), questionable reliability under harsch conditions (RJ45 is certainly not the most rugged connector on the market, and rugged alternatives are typically not standardised).
Did you know that the modern 100Mbit Ethernet/IP and Profinet IO protocols are actually slower than their old 5Mbit/12Mbit predecessors, ControlNet and Profibus?
Brolin 00:48, 7 July 2007 (UTC)
thread_title:  Device power on Ethernet claim ? 

message: USA : [www.fieldbus.org]
Middle East :[www.feucme.org]
Australia :[www.fieldbus.org.au]
Iran : [www.fieldbus.ir]  —Preceding unsigned comment added by Mrazmara (talk • contribs) 13:02, 1 January 2009 (UTC)
thread_title:  Fieldbus Organization at Present 

message: There are a number of issues I noticed in this table, which I believe need to be added or corrected. I can volunteer for this task. The issues are:
- No entry for FOUNDATION Fieldbus
- Profibus DP cable redundancy claim: This is at best an option, not a standard feature for this protocol.
- Profibus DP sub-millisecond cycle: Even at 12 Mbaud the typical performance of a Profibus DP is a few milliseconds. I have seen segments with less than 1 msec full-cycle but just barely, when using very few nodes and very short IO connections. But for practical purposes I find this claim too optimistic.  — Preceding unsigned comment added by AlfredoMQuintero (talk • contribs) 03:10, 3 February 2011 (UTC)
thread_title:  FEATURES table editing 

message: There are some instances in which fieldbus components are not different in price, namely Beckhoff components. The internal bus of a Beckhoff PLC is EtherCAT so all of their components are already technically on a "field bus," whether they are directly attached to the PLC itself or not.  — Preceding unsigned comment added by 134.79.222.200 (talk) 17:38, 14 May 2013 (UTC)
thread_title:  Disadvantages editing