RayTek MARATHON MR - Sensor Addressing

Installation
Marathon MR Rev. E2 04/2011 29
5.2.6 Addressing
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 greater zero.
Each sensor must be set to the same baud rate.
The addressing of a sensor can be done by means of the Multidrop Software (Menu <Sensor Setup>)
that came with your sensor. An alternative would be to use the specific interface commands of the
sensor in conjunction with a standard terminal program (e.g. Windows HyperTerminal), see section
9.5 Command List, page 47.
To set up your computer to initialize the sensors, complete the following stepps:
Attach each sensor individually in 4-wire mode to the computer.
Start the DataTemp Multidrop software.
In the DataTemp MultiDrop Startup Wizard, select the correct COM port and ASCII protocol,
then <Scan All Baud Rates> for a <Single Sensor>. DataTemp MultiDrop should find the single
MR unit connected to the computer serial port.
Once DataTemp Multidrop is running, go to the <Setup> menu and select <Sensor Setup>.
In the <Sensor Setup> menu select the <Advanced Setup> tab. This tab contains the
Communications Interface menu. The Interface Menu allows you to set the <Polling Address>,
<Baud Rate> and <RS485 Mode>. Each unit needs a unique address, but the same <Baud Rate>
and <RS485 Mode> settings.
Once all the units are addressed, wire up the units in the either the 2-wire or 4-wire multidrop
manner, keeping all TxA's, TxB's, RxA's and RxB's to be common.
Now you can run DataTemp Multidrop Software and by selecting the baud rate that you set,
the program will quickly identify all of the units attached on the network and you're up and
running.