ISAISA-TR50.02-Parts 3 & 4-2000, Fieldbus Standard for Use in Industrial Control Systems, Parts 3 & 4: Technical Report for Fieldbus Data Link Layer - Tutorial - Archived ISA-TR50.02-Parts 3 & 4-2000, ...
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 ...