What is meant by PROFIBUS?
PROFIBUS is a digital network responsible for providing the communication between the field sensors and the control system or the controllers. The first idea during its development was to have PROFIBUS solutions implemented in factory automation industries, then process industries, manufacturing, etc.
How does PROFIBUS communicate?
The communication basis for PROFIBUS lies in the cyclic data exchange between PLCs (masters) and devices (slaves). PROFIBUS components communicate using the PROFIBUS DP (Decentralized Periphery) communication protocol, which is the same for all applications and which allows cyclical and acyclical communication.
What are the advantages of PROFIBUS?
User benefits are ease of use and flexibility. The single communication protocol enables fully integated solutions of continuous as well as discrete and safety-related processes to run on the same bus. This eliminates the need for separate systems and allows hybrid automation.
What is PROFIBUS module?
PROFIBUS DP (Decentralized Peripherals) is a network that is made up of two types of devices connected to the bus: master devices and slave devices. It is a bidirectional network, meaning that one device, a master, sends a request to a slave, and the slave responds to that request.
Which cable is used in PROFIBUS?
The Cable. For Profibus networks a shielded AWG 22 or 0.34 mm² twisted pair cable is used. The standard isolation color of a Profibus DP cable is purple, and the two wires in the twisted pair are usually green and red.
What is Profibus International?
A larger group was formed in 1995 and named PROFIBUS International, or PI. As the largest Fieldbus user association in the world, PI is able to undertake many tasks vital to the progression of PROFIBUS. Like the PNO, PI educates users on PROFIBUS and helps advance its placement throughout the world.
What are the transmission methods of PROFIBUS?
This transmission method is primarily used with PROFIBUS DP. With optical transmission via fiber optics, star-, bus- and ring-topologies are used. The distance between the repeaters can be up to 15 km. The ring topology can also be executed redundantly.
What is the speed of PROFIBUS PA?
PROFIBUS PA runs at fixed speed of 31.25 kbit/s via blue sheathed two core screened cable. The communication may be initiated to minimise the risk of explosion or for the systems that intrinsically need safe equipment. The message formats in PROFIBUS PA are identical to PROFIBUS DP.
What is Profibus FMS?
The initial version of PROFIBUS was PROFIBUS FMS, Fieldbus Message Specification. PROFIBUS FMS was designed to communicate between Programmable Controllers and PCs, sending complex information between them. Unfortunately, being the initial effort of PROFIBUS designers, the FMS technology was not as flexible as needed.