At field level the distributed peripherals, such as I / O modules, measuring transducers, drives, servo actuators, valves and operator terminals communicate with automation systems, through an efficient communication system in real time.
The information transmission process is effected cyclically, while alarms, parameters and diagnostic information must also be transmitted acyclically should be necessary.
PROFIBUS meets for manufacturing transparent what these requirements and offers a solution same as for process automation.
PROFIBUS is an open field bus standard and vendor-independent for a wide range of applications in manufacturing and process automation
PROFIBUS allows communication between devices from different manufacturers without the need for a special interface.
PROFIBUS can be used both time-critical applications and high-speed and complex communication tasks.
... So ... At what level is PROFIBUS?
We realize ...? we climb in the automation pyramid!
... But there's more! ...
PROFIBUS protocol provides different profiles depending on the application:
- PROFIBUS DP (Distributed Periphery): high-speed communication for transfer of limited information. Allows connection of field devices, HMI drives, PLCs and PCs
- PROFIBUS PA (Process Automation): Communication in the process industry. Power and data via the same cable. Can be used in applications in potentially explosive atmospheres (EExi-intrinsic protection).
- PROFIBUS FMS (Fieldbus Message Specification): used cell level in complex communication tasks. However, the use of TCP / IP at this level will diminish their significance in the future.
TECHNICAL
Norm | PROFIBUS, EN 50 170. |
M é all access | H í Flange: token-passing master-slave with the lower layers (deterministic í diagnosis). |
I Index of communicable or n | 9.6 kbps to 12 Mbps |
Transmissible through or n | The é ctrica: shielded twisted pair. Ó Optical: FOR (glass or pl to diagnosis). |
M to maximum n ú station number | 127. |
Extensive network | The é ctrica: m to x. 9.6 km (depending on speed). Ó Optical: m to s of 100 km (depending on speed). |
Topology í to | Bus, ring, star, to tree. |
Hybrid Access Method?
Token passing, complex communication between stations, enabling you go cyclically one after another the ability to receive or send information. Master / slave communication between simple and complex devices, the teacher who sends or receives administered at one time.
BENEFITS
- One of the leaders in the market for bus systems: used throughout the world. Supported by major device manufacturers.
- Reliable data transmission.
- Flexible and Optimized system with different interfaces for different requirements. Different topologies to cover large areas.
- Open network standard.
... Anything else?
