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Introduction of Features
PROFIBUS-DP
IM 04L41B01-19E
PROFIBUS is an open field bus standard (IEC61158) used in various applications for
factory automation and process automation.
PROFIBUS-DP (Decentralized Periphery) is used for communication between PLCs and
remote I/O, enabling high-speed data transmission.
Configuration Components
PROFIBUS-DP network consists of following components:
• Class 1 master
A controller to exchange information with the slave in a cyclic manner. This is a PLC or
PC.
• Class 2 master
Engineering and configuration devices. This is either a PC on which configuration
software has been installed or software itself.
• Slave
I/O devices accessed by the master. This includes I/O devices, sensors, or actuaters.
The DX is a slave device.
• Terminator
The terminator of the bus.
• Cable
A dedicated two-wire cable is used.
• Others
Repeater, coupler, and other components are also used if needed.
Node
127 nodes can be connected to the network.
Note
For details of PROFIBUS specifications and information, see the documents published from the
PROFIBUS Organization in respective regions.
PROFIBU-DP Master (Class 1)
PLC etc.
Terminator
PROFIBUS-DP
Slave
PROFIBU-DP Master (Class 2)
PC
Cable
Slave
Terminator
Slave
5
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