Electrical installation
Communication
4
l
67
EDKLCMZ3024−SPS DE/EN 4.0
Basic structure of a PROFIBUS network with RS485 cabling without repeater
SSS
M
333
1
222
0m
< 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. (¶ 69).
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).
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