Difference between Profibus DP and Profinet protocol.

Difference between Profibus DP and Profinet protocol.

PROFINET is an upgraded version of the PROFIBUS protocol, as it is an industrial Ethernet-based protocol. Both protocols are developed and handled by the PI group.

FeaturesProfibus DPProfinet IO
Master Master Class 1IO Controller
SlaveSlaveIO Device
Wired TransmissionRS485 BasedEthernet Based
Wireless SolutionInfrared PossibleWLAN Wireless Area Network
can be used
Configurationsimply need to add IO device GSD file.Simple need to add IO device
GSDML file
Data ChannelsExactly one defined Data Channel Availableseveral Data Channels Possible
IT ServiceNot PossibleCan be Integrated
SpeedMaximum 12M bit/sec-Low100 M bit /Sec/1GBPS-High
Data PrioritySame PriorityDifference priorities can be set
for IO devices
Number of Devices126 MaximumDepend on Network , Arbitrary
Telegram Size244 Byte1440 Byte
Several UsersRead from Several users onlyRead write from several users possible
BandwidthLower BandwidthHigher Bandwidth
Motion AxisMaximum 32 Possible>150 axis Possible

Leave a comment