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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.


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

A Word from the Chairman

This committee is no longer active. If you have any questions, please contact ISA50 Chair, Richard Caro, or ISA Standards Administrator, Eliana Brazda at or (919) 990-9228.