Industrial Communication Guide

Profibus DP

Profibus PA

CAN (DeviceNet)

Topology

Line structure with passive bus termination, trunk/drop line topology Various cable lengths are defined depending on the cable type (thin, thick, flat), there is also a distinction between trunk line and drop line Energy supply of components via the bus: optional 24 V DeviceNet specifies the following data trans- mission rates for the trunk line: the maximum speed is 500 Mbit/s at 100 m ca- ble length and 125 kbit/s at 500 m cable length DeviceNet is limited to 64 components

Line, star,combination of the two Max. 1900 m extension Data transmission rate for Profibus PA is 31.25 kBit/s Components per bus segment max. 32, total 126 Converter between Profibus DP / PA

Line (copper, with active bus termina- tion), line, star and ring with FO Maximum cable length: 100 m to 1200 m depending on data rate Data transmission rate at 100 m cable length (electrical transmission) is ma- ximum 12.0 bit/s, at 1200 m max. 9.6 kbit/s Maximum 90 km extension in the case of an optical network (depending on the

fiber optic system used!) Total no. components 126

Max. components

126

126 (32 per segment)

127

Energy supply via the bus

No

Optional 9 – 32 V

Optional 24 V

Power Supply optionally possible in cable

28