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PROFIBUS PA PROFIBU for Process Automation PROFIBUS International¡]PI¡^¦¨¥ß©ó1995¦~¡A¬OPROFIBU´µªº°ê»Ú³Ê¦¡²Õ´¡C³q¹L²{³õÁ`½u³s±µ¨ì±±¨î¾¹ªº»·µ{I/O¿é¤J/¿é¥X³æ¤¸¡C¥Î©óPROFIBUS DPªºRLM 01¤¾¾lÃì¸ô¼Ò¶ô¡CRLM 01±N«D¤¾¾lPROFIBUS±q¾÷³s±µ¨ì½u¸ô¤¾¾lPROFIBUS¡CRS-485¬OEIA¡]¬ü°ê¹q¤l¤u·~¨ó·|¡^ªº³q«H±µ¤f¼Ð·Ç¡A¤u§@¹qÀ£¦b0V©M+5V¤§¶¡¡CRS-485¤ñRS-232C¨ã¦³§ó±jªº§Ü¾¸Án¯à¤O¡A¥i³B²z»·¶ZÂ÷¼Æ¾Ú¶Ç¿é¡A¨Ã¥iÅX°Ê§ó¦h±µ¦¬¾¹

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PROFIBUS PA PROFIBUS for Process Automation PROFIBUS International (PI) The international umbrella organization for PROFIBUS founded in 1995. PROFIBUS User Organization e.V. (PNO) The PNO is the trade body of manufacturers and users for PROFIBUS founded in 1989. Redundancy The existence of more than one capability of an item (system, equipment or component) to perform its intended function. Remote I/O Input/Output units connected to a controller via a fieldbus. RLM 01 Redundancy Link Module for PROFIBUS DP. The RLM 01 connects a non redundant PROFIBUS slave to the line redundant PROFIBUS. RS-485 A communication interface standard from EIA (Electronics Industries Association, USA), operating on voltages between 0V and +5V. RS-485 is more noise resistant than RS-232C, handles data transmission over longer distances, and can drive more receivers

PROFIBUS DP-V1 Version DP-V1 contains enhancements geared towards process automation, in particular acyclic data communication for parameter assignment, operation, visualization and interrupt control of intelligent field devices, parallel to cyclic user data communication. This permits online access to stations using engineering tools. In addition, DP-V1 defines alarms. Examples for different types of alarms are status alarm, update alarm and a manufacturer-specific alarm.

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