ALARM SYSTEMS - PART 7-3: MESSAGE FORMATS AND PROTOCOLS FOR SERIAL DATA INTERFACES IN ALARM TRANSMISSION SYSTEMS - COMMON DATA LINK LAYER PROTOCOL
International Electrotechnical Committee
FOREWORD
Clause
1 Scope
2 Normative references
3 Definitions
4 Abbreviations
5 General
6 Data link data block
7 Basic transmission protocol
7.1 Message time-out
7.2 Restart time-out
7.3 Network addresses
7.4 MASTER initialization
7.5 SLAVE initialization
7.6 Data link layer authentication (DLLA) function
7.7 Normal state
7.8 Multipoint operation
7.9 Wait state
7.10 Message From MASTER
7.11 SLAVE to SLAVE communications
7.12 General protocol
7.12.1 Reception errors
7.12.2 Response
7.12.3 Failure to respond
7.12.4 Re-initialization of SLAVEs
7.12.5 Failure of the MASTER
Annex A (normative) Data link data block types
Gives data link layer message structure, formats and transmission procedures which should be used at standard serial data interfaces in alarm transmission systems where the transmission network employed does not offer a standard protocol. Equally applicable to the transmission of alarms and other messages to/from intrusion, fire, access control and social alarm systems and to the transmission of information to/from other similar systems.
| Document Type | Standard |
| Status | Current |
| Publisher | International Electrotechnical Committee |
| Committee | TC 79 |
