Mounting with installation instructions
26
k4evo707en-2012-07
With 2 bus lines
Set the
terminating resistors
on the first and last device to
120
Ω
and all the others to
open
Connect
the
shieldings
of the RS-485 cables on the parent control unit and connected devices
to connection
C
(common); connect the
shieldings
of the RS-485 cables between the devices
to each other
Max. length between the last two devices is 1,200 m
3.5.1.2 Example of star cabling
The terminating resistor is adjusted either at the DIP switch or the jumper.
Set
the
terminating resistor
on the parent control unit to
120
Ω
and all the other devices
to
4.7 K
Ω
Connect
the
shieldingsof the RS-485 cables
on the parent control unit and the connected
devices to connection
C
(common)
Max. length per stub is 100 m
