sumair..

Can you please tell me what are application/uses of profibus and can we coneect profibus with sensors.If yes then Please tell me how?

PROFIBUS DP
The second type of PROFIBUS is more universal. Called PROFIBUS DP, for Decentralized Periphery, this new protocol is much simpler and faster. PROFIBUS DP is used in the overwhelming majority of PROFIBUS application profiles in use today. Application profiles allow users to combine their requirements for a specific solution, and they will be discussed in more detail shortly.

PROFIBUS DP has, itself, three separate versions. Each version, from DP-V0 to DP-V1 and DP-V2, provides newer, more complicated features.

PROFIBUS PA
PROFIBUS PA is a protocol designed for Process Automation. In actuality, PROFIBUS PA is a type of PROFIBUS DP Application profile. PROFIBUS PA standardizes the process of transmitting measured data. It does hold a very important unique characteristic, though. PROFIBUS PA was designed specifically for use in hazardous environments.

In most environments, PROFIBUS PA operates over RS485 twisted pair media. This media, along with the PA application profile supports power over the bus. In explosive environments, though, that power can lead to sparks that induce explosions. To handle this, PROFIBUS PA can be used with Manchester Bus Powered technology (MBP).