ISA50.2, Physical Layer Subcommittee

Scope

1. To develop standards for signals used in process measurement and control, to transmit information between subsystems or separated elements of systems. Such signals may be analog or digital. However, data highway and other time-shared transmission paths, such as those within the scope of ISA72, are excluded.

2. To continue to serve as the U.S. Technical Advisory Group for IEC-SC65A/WG4: Interface Characteristics.

Purpose

To define a common interface between components of electronic measurements and/or control systems.

A Word from the Chairman

Richard Caro, Chairman of ISA50 since 1993, and Cullen Langford, Chairman from 1987 to 1993, wish to thank everyone who participated in the development of the ISA-50.02 Fieldbus standards. The standards were administratively withdrawn as ANSI standards and have now also been withdrawn as ISA standards as they are no longer in use due to the issuance and acceptance of a more current IEC 61158 standards series.

Martin Zielinski
ISA50.2 Chair

List of Standards for Committee

Contacts:

Eliana Beattie Staff Contact ISA Phone: (919) 990-9228 Fax: (919) 549-8288	Peter Burton Voting Member Holwell Consulting Phone: +44 1462 813620 Fax: +44 1462 816718
James Geer Voting Member PRIME Measurement Products Phone: (818) 961-2547 Fax: (818) 937-0493	Maris Graube Voting Member Relcom Inc Phone: (503) 357-5607
James (Jim) Jamison Voting Member EnCana Corporation Ltd Phone: (403) 463-6112	Ken Kakizakai Voting Member Fuji Electric Co Ltd Phone: 04257 36111
Makoto Kogure Voting Member Hitachi Ltd Phone: +81-2 9-276-6127 Fax: +81-2 9-273-7805	Halvor Landet Voting Member Fieldbus International Phone: 4722067963 Fax: 4722067320
Arthur Lesh Voting Member AMP Inc Phone: (717) 592-6274 Fax: (717) 592-6179	Francis McKenna Voting Member Catena Associates Phone: +44 1525 712100 Fax: +44 1525 712277
Brian Neve Information Member BDN Consultants Phone: +44 1703-775613 Fax: +44 1703-492548	Rajkumar Rajendran Information Member Shell Phone: +74242663177
Robert Squires Voting Member	Teruyoshi Tottori Voting Member M-System Co Ltd Phone: 81 45 451 6060 Fax: 81 45 451 6062
Alain Tresset Voting Member CEGELEC Phone: +33-1 -46-29-16-30 Fax: +33-1 -46-31-7545	Chai Vaidya Information Member Sun Microsystems Phone: (408) 774-8711 Fax: (408) 544-0240
Ian Verhappen Information Member Industrial Automation Networks Inc Phone: (780) 842-4722 Fax: (780) 628-7352	Robert Webb Voting Member ICS Secure LLC Phone: (360) 394-3692 Fax: (360) 930-0546
Graeme Wood Voting Member Graeme Wood Consulting Phone: +44 1 883 62 7797 Fax: +44 1 870 135 1131	Marty Zielinski Managing Director Emerson Process Management Phone: (952) 828-3230 Fax: (952) 828-3299