What exactly is Profibus-DP

What exactly is Profibus-DP ?

 It's very simply explained  , very helpful and made thing more clear about the Profibus-DP.




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INTERBUS introduction

The INTERBUS fieldbus system has become established in all sectors and applications, and the number of devices used in different applications is increasing continuously. INTERBUS is an international global standard. However, we are regularly asked about the basic principles of INTERBUS and INTERBUS-capable equipment.

PROFIdrive Introduction

PROFIdrive – The standardized drive interface for PROFIBUS and PROFINET

 PROFIdrive defines the device behavior and the access procedure to internal drive data for electrical drives on PROFIBUS and PROFINET, from simple frequency converters up to high-performance servo controllers.

 It contains a detailed description of how the communication functions "slave-to-slave communication", "constant bus cycle time" and "isochronous operation" are used for drive applications. In addition, it clearly specifies all device characteristics which influence interfaces connected to a controller over PROFIBUS or PROFINET. This includes the sequence control, encoder interface, standardization of values, definition of standard messages, and access to drive parameters, etc.


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AS-Interface History

AS-Interface was developed during the late 1980 and early 1990 by a group (consortium) of 11

companies mostly known for their offering of industrial non-contact sensing devices like inductive sensors, photoelectric sensors, capacitive sensors and ultrasonic sensors. Once development was completed the consortium was resolved and a member organization, AS-International, was founded. The first operational system was shown at the 1994 Hanover fair (Hannover Messe or Hannover Fair).

What is AS-Interface ?

  AS-Interface  (Actuator Sensor Interface, AS-i) is an industrial networking solution (physical layer, data access method and protocol) used in PLC, DCS and PC-based automation systems. It is designed for connecting simple field I/O devices (e.g. binary ON/OFF devices such as actuators, sensors, rotary encoders, analog inputs and outputs, push buttons, and valve position sensors) in discrete manufacturing and process applications using a single 2-conductor cable.

What is PROFIBUS ?

         PROFIBUS (Process Field Bus) is a standard for field bus communication in automation technology and was first promoted in 1989 by BMBF (German department of education and research) and then used by Siemens. It should not be confused with the PROFINET standard for Industrial Ethernet. PROFIBUS is not an openly published and royalty-free protocol as MODBUS.