Manual

5
IM 04L41B01-19E
Introduction of Features
PROFIBUS-DP
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.
PROFIBUS-DP
Slave
Slave
Slave
PROFIBU-DP Master (Class 1)
PLC etc.
PROFIBU-DP Master (Class 2)
PC
Terminator
Terminator
Cable