
6-5
Cabling and Wiring the System
SIMATIC 545/555/575 System Manual
Use RS-485 cabling for the trunk and drop lines that connect the various
hardware items in your system. Trunk line refers to the cable that is used to
connect terminal blocks to one another; drop line refers to the cable that
connects a CPU or RBC to the trunk line by means of a terminal block. See
Figure 6-1.
TT
Trunk Lines
Drop Lines
Drop Line
T = Terminal Block
T
Remote
Base
Remote
Base
Local
Base
Figure 6-1 Trunk and Drop Line Example
Trunk and Drop
Lines
Comentarios a estos manuales