ETHERNET INTERFACE FOR A SYSTEM OF AUTOMATION WITH MICROCONTROLLER
Journal Title: ANALELE UNIVERSITATII DIN CRAIOVA - Seria Inginerie electrica - Year 2011, Vol 35, Issue 35
Abstract
Because the Internet is becoming more widespread, there was the possibility of communication with automation systems for configuration, reprogramming or control in real time. For this, the automation system needs a physical communication port with the network. This paper presents the design and implementation of such Ethernet interface for automation system with microcontroller. The connection between the automation system and the interface is made via an SPI(Serial Peripheral Interface) port. The main element of the interface is a chip named ENC28J60 manufactured by Microchip. It is designed to serve as an Ethernet network interface for any controller equipped with SPI. ENC28J60 meets all specifications of IEEE 802.3 having incorporated MAC and PHY modules. It also provides an internal mode DMA for fast data transfer and hardware for TCP/IP. With ENC28J60, an RJ45 connector and a few passive components we can connect a microcontroller to a 10 Mbps network. The access of ENC28J60 controller is done through configuration registers and memory. The interpretation of data to extract useful information is done by software routines. These interfaces have multiple applications: Remote monitoring of a system or industrial process, can be accessed on mobile devices with Internet connection, domestic applications.
Authors and Affiliations
Florin RAVIGAN, Niculae BOTEANU, Mircea Adrian DRIGHICIU
Keywords
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