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.
| from additional terminal block |
| of another sensor |
RS232/485 | RxB RxA TxB TxA |
Interface Converter |
|
XXX485CVT… |
|
| from RxB |
| from RxA |
| from TxB |
| from TxA |
| Ground |
| +24 VDC |
Elektronikbox
Terminal Block | Electronics Housing |
9 VDC or ... | 24 VDC power supply |
Figure 21: 4‐Wire Multidrop Wiring in a Network
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 | Marathon Series FA/FR |
