Rs485 Network Topology And Termination Principles - Integra BCR-SD G2 Installation And Service Manual

Higher cable cross-sectional areas may be necessary in the case of long lines, as voltage drops can
be expected.
5.2.4

RS485 network topology and termination principles

•
Linear double terminated bus
•
Linear double terminated cascade bus with S-Node G2 in the middle.
Star formation in the wiring from S-Node G2
•
Two linear double terminated cascade buses on C-Node G2.
RS485 lines from C-Node G2 can have bus formation although wiring is performed as a star
network. This can be done by using two cable pairs for the bus, "RS485 out" and "RS485 in".
C-Node G2 can be equipped with an optional connection block for this, CG2-VDE
1-981-2180-GB, 2021-03-16
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BCR-SD G2 Page: 16