LSI LASTEM E-Log, User Manual

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LSI LASTEM E-Log – User’s manual
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Repeater is a powered continuously device that acts as a measuring workstation and repeater of
network messages when they haven’t the ability to directly reach the master device.
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Slave is a device with the feature of remaining in low-power modality for a programmable time
in order to minimize the consumption; it’s a typical for applications where the power is
provided by small capacity battery (*).
ZigBee tecnology is commonly used with limited coverage wireless networks, capable of covering
areas with a radius around the hundreds of meters. Exploiting the characteristic to configure
dataloggers as a Repeater, it’s possible supervise a large environment by creating a network of
instruments communicating with each other without the use of special communication devices (as
dedicated cordless transmitter and repeater).
The possibility of having multiple Repeater devices in a network allows the messages to find viable
alternative routes to reach the destination with greater reliability or in case of failure of one of
network’s devices.
Constraints of ZigBee application are due to the distance between devices and physical obstacles
(walls and ceilings for indoor applications, buildings and plants for outdoor applications) that the
signal encounters during their journey to the destination of communication.
Specifications Performances
Indoor standard range up to 60 m
Outdoor standard range (as the crow
flies)
up to 500 m
Diffused power 10 mW (+10 dBm)
Reception sensitivity -102 dBm
Operating frequency band ISM 2.4 GHz
Bit rate 250 Mb per seconds
Data throughput up to 35000 bps
Number of channels 13
Transmission consumption (only radio) 170 mA
Reception consumption (only radio) 45 mA
Supported network topologies
Point-to-point, Point-to-multipoint
Peer-to-peer, Mesh
Agency approvals
Europe (CE) ETSI
United States (FCC Part 15.247) FCC ID:MCQ-XBEEPRO2
Industry Canada (IC) IC: 1846A-XBEEPRO2
Australia C-Tick
Japan R201WW8215142
These are operation conditions to be follow for arrangement of a network:

In each network should be only one Master device;

use Slave device only with energy saving requirements or inability to be fed continuously;

the maximum number of repeaters connected in cascade is 10 (i.e. the greater physical
distance in a network must be covered with 10 sectors);

you can directly connect maximum 12 Slave devices to each Repeater;
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you can directly connect maximum 10 Slave devices to each Master device;
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in a ZigBee network you can connect maximum 200 devices (as well as for the CISS
protocol).
There are two main transmission modes provided for a ZigBee network: