Table des Matières
Publicité
Les langues disponibles
Les langues disponibles
CABLING RS-485 BUS
If the remote devices have been installed correctly, all the bus communication LEDs on each device should flash . If some of them
don't flash, it means that the device has not been installed and programmed correctly (check cabling, address and programming in the
control unit) .
TRADITIONAL CABLING (entry-exit)
+
A
B
–
BUS
+
A
B
–
BUS
CABLING WITH BRANCHING
+
A
B
–
BUS
The branching consists of a cable with three pairs, two of which are twisted (each pair is made up of conductors A and B) . Analysing
the circuit made in this way, you can see that the structure of the RS-485 bus is still linear (entry-exit) .
+
A
B
–
BUS
+
A
B
–
BUS
+
A
B
–
BUS
+
+
A
B
–
BUS
+
+
A
B
–
BUS
+
+
A
B
–
BUS
+
A
B
–
+
BUS
A
B
–
BUS
+
A
B
–
BUS
+
A
B
–
BUS
A
B
–
BUS
A
B
–
BUS
A
B
–
BUS
Publicité
Table des Matières
