Profibus vs Modbus (Difference between Profibus and Modbus)

Profibus vs Modbus

Profibus DP vs  Profibus PA vs Profibus FMS


Parameters Profibus Modbus
Profibus DP Profibus PA Profibus FMS
Website www.profibus.com www.Modbus.org
Intrinsically Safe No Yes No No
Operaing voltage 9-32v DC
Maximum Cable Length 100m-24km 1900m 200m-19.2km 1200m
Goveming Standard(S) EN50170
DIN 19245 p3
IEC-61158-2
DIN 19245 p4
EN13321/1 DIN 19245 EN1434-3
IEC870-5
Communication
Methods
Master/stave peer to peer Master/stave peer to peer Master/stave peer to peer Master/Slave
Communication
Speed
15-12 Mbits/5 31.25 kbits/s 9-6-500 kbits/5 9.6-115-2 kbits/s
Media Access
Algorithm
Token passing Token passing Token passing Token passing
Max. Data Size 248 bytes 248 bytes 248 bytes 250 bytes (125 registers)
Max Station 127 devices 32 devices 127 devices 247 per network

Must Read : What is Profibus ? How Profibus Work ?

Must Read : Profibus vs Profinet

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