Title :
Real time properties of LANs according to the Manufacturing Automation Protocol (MAP)
Author_Institution :
Univ. of Fed. Armed Forces Munich, Neubiberg, West Germany
Abstract :
The author reports on an evaluation of real-time properties of Manufacturing Automation Protocol (MAP) networks through analytical considerations which are then compared to measurement data. Measurements were made on a MAP 2.1 network that consists of 5 nodes based on the Motorola VME-bus MAP-controller MVME 372. This implementation has a complete logical link control layer (LLC-layer) and MAP-layer according to ISO 8802/8804 (with LLC-type 3 and priorities). Figures for message delay (for the MAC layer) and response time (for the transport layer) are given. Results for selecting protocol parameters affecting real-time behavior are given. Aspects for improved implementations of communication controllers for MAP networks are discussed
Keywords :
local area networks; protocols; real-time systems; ISO 8802/8804; LANs; MAP; MAP 2.1 network; Manufacturing Automation Protocol; Motorola VME-bus MAP-controller MVME 372; communication controllers; logical link control layer; message delay; protocol parameters; real-time properties; response time; transport layer; Access protocols; Communication system control; Delay effects; Delay estimation; Force measurement; Hardware; Local area networks; Manufacturing automation; Model driven engineering; Scheduling;
Conference_Titel :
Real Time, 1989. Proceedings., Euromicro Workshop on
Conference_Location :
Como
Print_ISBN :
0-8186-1956-2
DOI :
10.1109/EMWRT.1989.43453
