Technical data

Active components
4.1 Active components for RS485 networks
PROFIBUS Network Manual
System Manual, Edition 04/2009, C79000-G8976-C124-03
73
Segment 1 terminated, segment 2 connected through
The following figure shows the connection between two segments via an RS485 repeater
with one segment connected through:
R
Terminating resistor
Bus segment 2
off!
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
activate!
Terminating resistor
Bus segment 1
Terminating resistor
Bus segment
activate!
Terminating resistor
Segment 1
Segment 2
Terminating resistor
Bus segment 2
off!
Bus segment 1
Terminating resistor
Bus segment
activate!
Segment 1
Segment 2
Figure 4-5 Connection of two bus segments with an RS-485 repeater
Segments 1 and 2 connected through
The following figure shows the connection between two segments via an RS485 repeater
with each bus cable connected through:
R
Terminating resistor
off!
Terminating resistor
Bus segment 2
off!
Segment 1
Segment 2
Terminating resistor
Bus segment 1
off!
Terminating resistor
Bus segment 2
off!
Segment 1
Segment 2
Figure 4-6 Connection of two bus segments with an RS-485 repeater