ISA50.5, Application Layer Stack

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 The standards were administratively withdrawn as ANSI standards and have now also been withdrawn as ISA standards as they are no longer in use due to the issuance and acceptance of a more current IEC 61158 standards series.

Udo Doebrich, ISA50.5 Chair

List of Standards for Committee

Contacts:

Chuji Akiyama Voting Member Yokagawa Electric Corp Phone: +81 42 2 52 5534 Fax: +81 42 2 55 6492	Eliana Beattie Staff Contact ISA Phone: (919) 990-9228 Fax: (919) 549-8288
Patricia Brett Information Member Honeywell Inc Phone: (215) 641-3373 Fax: (215) 641-3850	Robert Crowder Information Member
Emmanuel DelaHostria Information Member Rockwell Automation Phone: (440) 646-7324 Fax: (440) 646-7327	Udo Doebrich Voting Member Chair Siemens AG Phone: +49 7 21 595 2550 Fax: +49 7 21 595 6728
Mauro Giraudi Voting Member Private Consultant Phone: +39 1 980-2918 Fax: +39 1 980-2918	Kenneth Krivoshein Voting Member Fisher-Rosemount Systems Inc Phone: (512) 418-7400 Fax: (512) 418-7505
Yasuo Kumeda Voting Member Yamatake Corp Phone: +81 466 20 2430 Fax: +81 466 20 2431	Thierry Laine Voting Member Alstom Technology Phone: +33 1 46 29 12 59 Fax: +33 1 46 31 75 45
Klaus-Peter Lindner Information Member Endress+Hauser Process Solutions AG Phone: +41 61 715 7348 Fax: +41 61 715 2802	Orazio Mirabella Voting Member Univ di Catania Phone: (399) 573-2361 Fax: (399) 533-8280
Lee Neitzel Voting Member Emerson Process Management Phone: (512) 418-4663 Fax: (512) 418-7500	Manfred Patz Voting Member Softing GmbH Phone: 0049 89 45656 0 Fax: 0049 89 45656 399
Rajkumar Rajendran Information Member Shell Phone: +74242663177	Francesco Russo Voting Member MGR Automazione Phone: +39 2 266 4013 Fax: +39 2 266 4013
Karlheinz Schwarz Voting Member Schwarz Consulting Co Phone: 49 72 1 684 844 Fax: 49 72 1 679 387	Edward Skabowski Information Member Tendent Consulting Phone: (925) 944-7167
Peter Thiessmeier Voting Member Klockner-Moeller Phone: 49 22 8 602 568 Fax: 49 22 8 602 724	Nathan Tobol Information Member Ronan Engineering Phone: (818) 883-5211 Fax: (818) 992-6435
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
Christopher Williams Information Member ITT Phone: 585 269 7764	Gregory Winchester Information Member Natl Electrical Mfrs Assn Phone: (703) 841-3299 Fax: (703) 841-3399
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