Definition of HART Protocol

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Thread Starter

Chris

I hear the term "HART" protocol, but only have a rough idea what it actually is. Is it in any way related to GPIB protocol?

would someone point to a reference that would give me some basic defintions and a protocol reference.
 
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James Ingraham

Conviently, "http://www.hartcomm.org/":http://www.hartcomm.org/ is "The Official Source on HART Technology."

Yes, GPIB and HART are related, in the same way that any two network protocols are related. Certainly, GPIB and HART are both used primarily for analog data acquisition. The similarites end there, however.

-James Ingraham
Sage Automation, Inc.
 
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Daniel Chartier

Hello;
HART is a 2-wire, current-loop communication link for instrumentation devices (pressure, flow, level, temperature.... transmitters). It can be used in Ex zones (undes certain conditions). Fisher-Rosemont, Invensys, Foxboro, and other manufacturers of field transmitters have joined to create the HartComm organisation; you can look at their weppage at:

"www.hartcomm.org/hcf/overview.html":http://www.hartcomm.org/hcf/overview.html .

Hope this helps,
Daniel Chartier
 
S
There is an excellent book written by Romilly Bowden of Fisher Rosemount that describes HART in detail.

I have no idea what GBIB is but HART exists only over 4/20 mA loops, either superimposed over the 4/20mA in a point to point application or in a purely digital form for multi-drop applications (although applications of this are rare)

Steve
 
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Dear Chris,

HART is not related to GPIB. HART in an enhancement to 4-20mA communication that allows two way digital communication with smart (i.e.,
microprocessor-based) field devices. If you will, HART field device simultaneosly support two communications channels: the 4-20mA communications and modulated two-way digital communications.

I will be glad to answer any questions about HART you have. In addition, there is abundant information about HART on our web site.

best regards,

Wally Pratt ([email protected])
Chief Engineer
HART Communication Foundation
http://www.hartcomm.org
 
K

Ken Zlotkowski

Wally,

Do you know of any protocol converter to get HART devices onto ethernet? A Linux based program is what I am looking for.

Thanks,

Ken Zlotkowski
 
hey! in what way is it just not related or hasn't anything to do with GPIB? could u give more clarification? may i know ur conceptual frame of mind about HART?
 
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