Overview of the PROFIBUS network and the FPBA-01 module 21
Overview of the PROFIBUS
network and the FPBA-01
module
What this chapter contains
This chapter contains a short description of the PROFIBUS
network and the FPBA-01 PROFIBUS DP adapter module.
PROFIBUS network
PROFIBUS is an open serial communication standard that enables
data exchange between all kinds of automation components.
There are three main variations of PROFIBUS:
• PROFIBUS FMS (Fieldbus Message Specification)
• PROFIBUS DP (Decentralised Periphery)
• PROFIBUS PA (Process Automation).
The physical transmission medium of the bus is a twisted pair
cable (according to the RS-485 standard). The maximum length of
the bus cable is 100 to 1200 meters, depending on the selected
transmission rate (see chapter Technical data). Up to 32 nodes can
be connected to the same PROFIBUS network segment without
the use of repeaters. With repeaters, it is possible to connect 126
nodes (including repeaters and a master station) to the network.
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