An industrial local network architecture in a Mini-MAP environment

Local industrial network performances are mainly dependent on the layer-architecture and communication protocols. The service qualities in time and reliability are severely constraint on the layer-interfacing service nature and management. The authors´ primary goal in this paper is to define a particular MAP (manufacturing automation protocol) architecture for a local industrial area. This architecture would reduce the cost of software development and maintenance: the Mini-MAP/EPA architecture (enhanced performance architecture). They try to describe a MMS (manufacturing message specification) Mini-MAP server behavior and its deferent service types. The description of the shop network aims to give implementation tools of the IEEE (Institute of Electrical and Electronics Engineers) 802.4 protocol in the MAC under data-link-layer and the IEEE 802.2 protocol LLC under-data-link-layer