PROFIBUS DP Protocol Principle and Main Features
Overview
PROFIBUS DP is an open industrial standard for integrated communication. It is a serial fieldbus, which provides a decentralized connection between sensors, actuators and I/O modules produced by various manufacturers, and connects them to the superset control level.
PROFIBUS DP (Distributed Periphery - Primary/Secondary Network) is a PROFIBUS communication profile which is optimized for performance. It is optimized for speed, efficiency and inexpensive hook-up cost and is designed especially for communication between automation systems and distributed peripheral equipment.
The PROFIBUS DP network supports multiple primary systems with several secondaries.
PROFIBUS DP Features
The following table contains specifications of the PROFIBUS DP:
|
Standard |
EN 501 70 DIN 19245 |
|
Transmission Equipment (Physical Profile) |
EIA RS-485 |
|
Transfer Procedure |
Half-duplex |
|
Bus Topology |
Linear bus with active bus termination |
|
Bus Cable Type |
Shielded, twisted-pair conductors |
|
Connector |
SUB-D 9-pin Open style |
|
Number of Nodes on the Bus |
Maximum of 32 with no repeaters Maximum of 125 with three repeaters in four segments |