Fieldbus

FOUNDATION Fieldbus  
FOUNDATION Fieldbus Official Website 

HART

HART Foundation Homepage
HART Communication Foundation 

AS-Interface

Pepperl+Fuchs AS-Interface Site
Pepperl+Fuchs AS-Interface Extranet site. 

General Interest

ARC Web  
Latest Automation and E-Business news 

Industry Associations

ISA Homepage 
International Society for Measurement and Control

OPC Foundation Homepage 
OLE for Process Control Magazine

Control Engineering
Industry Magazine Website 

Process Control

Pepperl+Fuchs 
Pepperl+Fuchs (P+F) - Signals for the World of Process Automation. Elcon Instruments are part of the P+F Group.

Pepperl+Fuchs, Inc. 
(In the Americas)

Emerson Process Management

Standards

IEC Home Page
IEC (International Electrotechnical Commission)