Installing Of Multiple Sensors In A Network; Wiring; Addressing - RayTek MARATHON FA Operating Instructions Manual

Installation
5.8 Installing of Multiple Sensors in a Network
5.8.1 Wiring
For an installation of two or more sensors in a network, each sensor cable is wired to its own terminal
block. The RS485 terminals on each terminal block are wired in parallel.
The following figure illustrates the wiring of sensors in a 4‐wire multidrop installation. A network as a
2‐wire multidrop installation is to realize according to Figure 19, p. 23.
RS232/485
Interface Converter
XXX485CVT...
9 VDC or ... 24 VDC power supply
5.8.2 Addressing
The addressing of a sensor can be done by means of the Multidrop Software (Menu <Sensor Setup>)
that came with your sensor. As alternative the specific interface commands of the sensor can be used
in conjunction with a standard terminal program (e.g. Windows HyperTerminal), see section 9.5
Command List, p. 42.
If you are installing two or more sensors in a multi‐drop configuration, please be aware of the
following:
•
Each sensor must have a unique address.
•
Each sensor must be set to the same baud rate.
24
from RxB
from RxA
from TxB
from TxA
Ground
+24 VDC
Figure 21: 4‐Wire Multidrop Wiring in a Network
from additional terminal block
of another sensor
RxB RxA TxB TxA
Terminal Block
Marathon Series FA/FR
Elektronikbox
Electronics Housing