Electrical installation – Lenze ELCAMZIxxx4SNNPSNN (LCU122) User Manual
Page 38
Electrical installation
Communication
5
38
EDSLCMX3024-SPS EN 5.0
Basic structure of a PROFIBUS network with RS485 cabling without repeater
S
S
S
M
3
3
3
1
2
2
2
0 m
< 1200 m
lcu12x_005
No.
Element
Comment
1
Host
E.g. PC or PLC with PROFIBUS master interface module
2
Bus cable
Adapt baud rate to bus cable length
3
PROFIBUS slave
Device with PROFIsafe on board
Note!
If a repeater is used, max. 125 stations can communicate via the PROFIBUS.
Please observe the following when wiring
ƒ
Do not change the bus topology, i.e. do not use stubs.
ƒ
Observe the notes and wiring regulations in the documentation for the control
system.
ƒ
Do not use cables other than specified in the specifications. ( 40).
ƒ
Plug bus terminating connector on X32 at the last bus station. Ensure that the
PROFIBUS is also terminated at the first bus station (master).