PROFIBUS bus communication interface module CI851. This information is found in the online help of Control Builder M. It also does not provide any informatio n about installing the PROFIBUS network. This information is provided in the AC 800M PROFIBUS DP Installation manual (3BDS009029.) for PROFIBUS DP-V1. For a selection of Siemens Milltronics level measurement manuals, go to. This manual applies to the SITRANS LR260 (PROFIBUS PA) only.
Contents.Origin The history of PROFIBUS goes back to a publicly promoted plan for an association which started in Germany in 1986 and for which 21 companies and institutes devised a master project plan called '. The goal was to implement and spread the use of a field bus based on the basic requirements of the field device interfaces. For this purpose, member companies agreed to support a common technical concept for production (i.e. Discrete or factory ). First, the complex communication protocol Profibus FMS (Field bus Message Specification), which was tailored for demanding communication tasks, was specified.
Subsequently, in 1993, the specification for the simpler and thus considerably faster protocol PROFIBUS DP (Decentralised Peripherals) was completed. Profibus FMS is used for (non-deterministic) communication of data between Profibus Masters. Profibus DP is a protocol made for (deterministic) communication between Profibus masters and their remote I/O slaves.There are two variations of PROFIBUS in use today; the most commonly used PROFIBUS DP, and the lesser used, application specific, PROFIBUS PA:. PROFIBUS DP (Decentralised Peripherals) is used to operate sensors and actuators via a centralised controller in production (factory) automation applications. The many standard diagnostic options, in particular, are focused on here. PROFIBUS PA (Process Automation) is used to monitor measuring equipment via a process control system in process automation applications.
This variant is designed for use in explosion/hazardous areas ( 0 and 1). The Physical Layer (i.e. The cable) conforms to IEC 61158-2, which allows power to be delivered over the bus to field instruments, while limiting current flows so that explosive conditions are not created, even if a malfunction occurs. The number of devices attached to a PA segment is limited by this feature. PA has a data transmission rate of 31.25 kbit/s. However, PA uses the same protocol as DP, and can be linked to a DP network using a coupler device.
The much faster DP acts as a backbone network for transmitting process signals to the controller. This means that DP and PA can work tightly together, especially in hybrid applications where process and factory automation networks operate side by side.In excess of 30 million PROFIBUS nodes were installed by the end of 2009. Kilian: Decentralization with PROFIBUS DP/DPV1,. M. Felser: PROFIBUS Manual, A collection of information explaining PROFIBUS networks assembled by Prof.
Max Felser,. R. Mitchell: PROFIBUS: A Pocket Guide,.
J. Vandeline: Catching the Process Fieldbus: An Introduction to Profibus for Process Automation,. J. Xiu: PROFIBUS in Practice: Installing PROFIBUS devices and cables,. J.
Xiu: PROFIBUS in Practice: System Engineering, Trouble-shooting and Maintenance,. J. Xiu: PROFIBUS in Practice: System Architecture and Design,External links.