PD-01 PROFIBUS-DP Module
Chapter 2 Introduction
PROFIBUS
PROFIBUS is an international, vendor- independent, opening filed bus standard for a wide range of applications in the fields of manufacturing, production, process and building automation, and other automation control field.
The PROFIBUS family comprises three types of protocol, PROFIBUS-DP, PROFIBUS-PA and PROFIBUS-FMS, each of them is used for different tasks:
PROFIBUS-DP (Decentralized Periphery): PROFIBUS-DP is a rapid and low cost communication connection designed for high-speed data transmission at field level. PROFIBUS-DP has widespread usage for such items as remote I/O systems, motor control centers, and variable speed drives. It is designed and optimized especially for communication between automation systems and decentralized peripheral devices.
PROFIBUS-PA (Process Automation): PROFIBUS-PA is the PROFIBUS solution for process automation, typically with MBP-IS transmission technology. Based upon PROFIBUS-DP, PROFIBUS-PA is an extension of the PROFIBUS-DP protocol for data transmission. It is designed to support intrinsically safe applications and can be used within hazardous areas, with high explosion risk using intrinsic safe MBP-IS interface. PROFIBUS-PA is used to connect sensor and controller to the bus.
PROFIBUS-FMS (Fieldbus Message Specification): PROFIBUS-FMS is multiple master communications designed for communication at the cell level. It is designed for acyclic or cyclic data transfers at medium speed between control equipment and cell-level controllers. FMS services open up a wide range of applications and offer a wide range of functionality and flexibility.
The Maximum cable length in a segment depends on the transmission speed. PROFIBUS-DP communicates at speeds from 9.6 Kbps to 12 Mbps over distances from 100 to 1,200 meters.
| Baud Rate | 9.6K | 19.2K | 93.75K | 187.5K | 500K | 1.5M | 12M |
| (bps) |
| | | | | | | |
| Length (m) | 1200 | 1200 | 1200 | 1000 | 400 | 200 | 100 |
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