This Part of GB/Z 20177 applies to a communication protocol for networked control systems. The protocol provides peer-to-peer communication for networked control and is suitable for implementing both peer-to-peer and master-slave control strategies.
This Part describes services in layers 2-7. In the layer 2 (data link layer) specification, it also describes the MAC sub-layer interface to the physical layer. The physical layer provides a choice of transmission media. The interface described in this specification supports multiple transmission media at the physical layer. In the layer 7 specification, it includes a description of the types of messages used by applications to exchange application and network management data.
This Part is applicable to the design, manufacture, integration, installation and maintenance of Automation Control System and products.
2 Normative References
The following normative documents contain provisions which, through reference in this text, constitute provisions of this Part of GB/Z 20177. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this Part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 9387.1-1998 Information Technology - Open Systems Interconnection - Basic Reference Model - Part 1: The Basic Model (idt ISO/IEC 7498:1994)
GB/T 16262-1996 Information Processing System - Open Systems Interconnection - Specification of Abstract Syntax Notation One (ASN.1) (idt ISO/IEC 8824:1990)
GB/T 16263-1996 Information Processing System - Open Systems Interconnection - Specification of Basic Encoding Rules for Abstract Syntax Notation One (ASN.1) (idt ISO/IEC 8825:1990)
3 Terms and Definitions
