
INDUSTRIAL COMMUNICATION NETWORKS - FIELDBUS SPECIFICATIONS - PART 3-7: DATA-LINK LAYER SERVICE DEFINITION - TYPE 7 ELEMENTS
出版:Comitato Elettrotecnico Italiano

專家解讀視頻
Give common elements for basic time-critical messaging communications between devices in an automation environment. The term time- critical is used to represent the presence of a time-window, within which one or more specified actions are required to be completed with some defined level of certainty.