PROFIBUS PA and PROFIBUS DP

Field Network Q&A

Why should I have PROFIBUS PA? Can I implement every device we have in the PROFIBUS DP network?

Expert’s answer: PROFIBUS PA and PROFIBUS DP

PROFIBUS PA and PROFIBUS DP – that’s the question. The PROFIBUS DP offers high-speed communication between systems and decentralized devices. It uses cables based on the RS-485 standard or optical fiber. Nearly 90 percent of the slaves on  PROFIBUS networks operate from PROFIBUS DP.

PROFIBUS PA and PROFIBUS DP
Courtesy of Gridconnect.com

On the other hand, the PROFIBUS PA connects field devices and control systems in hazardous areas, like those with explosive gas. The PROFIBUS PA allows all the field data to travel on the same pair of cables. It also keeps the devices loop-powered, to reduce currents that could set off explosions.

For more on PROFIBUS, check out these companies:

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PROFIBUS DP/PA remote configuration
I have a PROFIBUS network, and I’d like remote access for the field device configuration. So can I bypass my PLC with remote access?

Terminator on PROFIBUS network!
Do we really need a terminator in our PROFIBUS network? What happens if we don’t install it?

 

Related tags: Loop-powered Profibus PROFIBUS association Profibus DP Profibus PA RS 485
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