Electrical Engineering Stack Exchange
Electrical Engineering Stack Exchange

Questions tagged [profibus]

8 questions
16
votes
1 answer

Why is Ethernet not intrinsically safe?

I understand from a training session that ProfiBUS is considered intrinsically safe, while ProfiNET is not. Some googling indicates that ProfiNET can never be intrinsically safe, because Ethernet can not be. This surprises me, as Ethernet over fiber…
Stephen Collings
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4
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1 answer

Adding Profibus capabilities to a product

We are currently developing a product and now the "idea" has come up to integrate Profibus since it is quite used in that specific area. Now I was wondering if anyone has made such a product. If I understand correctly, Profibus is actually a RS-485…
Tom L.
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2
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1 answer

Choose between Profibus PA and DP

I currently try to understand a new technology: Profibus, until now I worked with HART, with which I also had some struggle in the begging but now it's clear. I try to understand why in a factory is used both PA and DP. I understand that to convert…
Vesa95
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2
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4 answers

AVR or Arduino Profibus interface project?

Is there an open source solution to interface any profibus slave or master chips? These are the latest finds for a Profibus slave AVR solution: AVR GCC with up to 187.5Kbps profibus slave in software AVR GCC with up to 12Mbps profibus slave in…
avra
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2
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0 answers

can i interface profinet protocol to ethernet interface?

i have a profinet device and an Ethernet port which is dedicated for KNX protocol. can i connect my profinet device to this Ethernet port?
Yasir Mohamed
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2 answers

Profibus DP RS485 Polarity

I am implementing a device which communicates on Profibus DP. In order to get the communication with my Siemens S700 PLC to work, I have to reverse the order of the 'A' and 'B' differential signal leads. The profibus communication is implemented by…
Houston Fortney
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0
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1 answer

Is this signal reflection or a damaged transmitter?

This is (an isolated, differential) capture, 1µs/div, of some Profibus communication over about 10m of cable. The first image is typical for about 90% of packets and seem fine. Most are +/-5v with slight deviation from device-to-device as they…
rdtsc
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2 answers

Analog signals in profibus

I've read that in Profibus, both analog and digital signals can be transmitted on the same wire. I'm curious how this happens and wasn't able to find an answer on google. Could someone please explain or point me in the right direction.
romanbird
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