Atim Cloud Wireless LORaWAN LW8-GW User manual

ATIM Radiocommunications
Chemin des Guillets
38250 Villard de Lans - France
France
www.atim.com
[email protected]
[phone]
Atim Cloud Wireless
LoRa-LoRaWAN repeater
LW8-GW
User Guide
Concerned models:
ACW/LW8-GW

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TABLE OF CONTENTS
Document version history ..................................................................................................................................................2
Disclaimer ...........................................................................................................................................................................2
Trademarks and copyright..................................................................................................................................................2
Declaration of compliance..................................................................................................................................................3
Environmental recommendations......................................................................................................................................3
a. Explosive atmosphere.............................................................................................................................................3
b. Environment ...........................................................................................................................................................3
c. Radio.......................................................................................................................................................................4
Prelude................................................................................................................................................................................5
Technical characteristics.....................................................................................................................................................6
Product identification.........................................................................................................................................................6
Operating mode..................................................................................................................................................................8
Operating principle.........................................................................................................................................................8
Installation and commissioning......................................................................................................................................9
•Repeater installation...........................................................................................................................................9
•Configuration of the device(s) to be repeated ...................................................................................................9
•Frame decoding ................................................................................................................................................10
Limitation..........................................................................................................................................................................11
•General limitations ...........................................................................................................................................11
•Products compatible with the repeater ...........................................................................................................11
Technical support .............................................................................................................................................................12

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This user guide applies to the below references:
Document version history
Disclaimer
The information contained in this document is subject to change without warning and does not represent a
commitment on the part of ATIM radiocommunications. ATIM radiocommunications provides this document ‘as-is’
with no warranty of any kind, express or implied, including but not limited to implied warranties of merchantability or
fitness for a particular purpose. ATIM radiocommunications may make changes and/or improvements to this manual
or to the product(s) or program(s) described in this manual, at any time.
Trademarks and copyright
ATIM radiocommunications®, ACW ATIM Cloud Wireless® and ARM Advanced Radio Modem® are registered
trademarks of ATIM SARL in France. The other trademarks mentioned in this document are the property of their
respective owners.
Product reference
Product version
ACW/LW8-GW
A.0
Version
Date
Description
Author
0.1
22/01/2021
User Guide creation
YLB
1.0
29/01/2021
Minor corrections
FR
1.1
24/03/2021
Correction of the frame’s decoding section
YLB

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Declaration of compliance
All ACW Atim Cloud Wireless® products comply with the regulatory requirements of the R&TTE Directive (1999/5/EC),
article 3:
1 SAFETY (Article 3.1a of the 1999/5/EC Directive)
NF EN60950-1 Ed. 2006/A1:2010/A11:2009/A12:2011 (health)
EN62479: 2010 (power <20mW) or EN62311:2008 (power > 20mW)
2 Electromagnetic compatibility (Article 3.1b of the 1999/5/EC Directive)
EN 301489-3 v1.4.1, EN 301489-1 V1.9.2
3 Efficient use of the radio frequency spectrum (Art.3.2 of the 1999/5/EC Directive)
ETSI EN300 220-2 v2.4.1 and EN300 220-1 v2.4.1
Environmental recommendations
a. Explosive atmosphere
Except for the ACW-ATEX line specifically intended for this purpose, do not use ACW radio modems in the presence of
flammable gases or fumes. Using the equipment in such an environment constitutes a safety hazard.
b. Environment
Respect the temperature ranges for storage and operation of all products. Failing to respect these guidelines could
disrupt device operation or damage the equipment. ACW products in IP65 water- and dust-resistant housings may be
placed outdoors but must not be submerged under any circumstances.
Follow the instructions and warnings provided below to ensure your own safety and that of the environment and to
protect your device from any potential damage.

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General hazard –Failure to follow the instructions presents a risk of equipment damage.
Electrical hazard –Failure to follow the instructions presents a risk of electrocution and
physical injury.
Direct-current symbol
WARNING: do not install this equipment near any source of heat or any source of humidity.
WARNING: for your safety, it is essential that this equipment be switched off and disconnected from
mains power before carrying out any technical operation on it.
WARNING: the safe operation of this product is ensured only when it is operated in accordance with
its intended use. Maintenance may only be performed by qualified personnel.
Waste disposal by users in private households within the European Union. This symbol appears on a
product or its packaging to indicate that the product may not be discarded with another household
waste. Rather, it is your responsibility to dispose of this product by bringing it to a designated collection
point for the recycling of electrical and electronic devices. Collection and recycling waste separately at
the time you dispose of it helps to conserve natural resources and ensure a recycling process that
respects human health and the environment. For more information on the recycling centre closest to
your home, contact your closest local government office, your local waste management service, or the
business from which you purchased the product.
c. Radio
Modems in the ACW line are radio-communication modems that use the ISM (industrial, scientific, and medical) bands,
which may be used freely (at no cost and with no authorization required) for industrial, scientific, and medical
applications.

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Prelude
This guide describes the features of the ATIM ACW / LW8-GW product. It explains how to use this Lora LoRaWAN
repeater and how to install it.

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Technical characteristics
General
Dimensions
177 x 55 x 55 mm
Antenna
Integrated (¼ wave)
Temperature
-20°C to +55°C (operating mode)
-40°C to +70°C (storage)
Mounts to
Wall, tube or pole, DIN rail
Housing
IP 65
Weight
210 g
Power Supply
ACW/LW8-GW
10-30Vcc (power supply 220Vac / 12Vdc included)
Consumption
@ 3.3V :
Tx mode
50 mA
Rx mode
20 mA
Product identification
The ID of the repeater is visible on the exterior label on the back of the device:
GW
Device ID
Revision number of the device
(Hardware and software states)
Device serial number
DevEUI LoRaWAN
datamatrix
Device reference

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Each product in ATIM's ACW range has a QR Code label visible either on the side or on the front of the product.
This QR code can be easily read with any 2D barcode reader application on a smartphone.
Reading this code indicates the following information:
ATIM|ACW/LW8-GW|A.0|210122|1|1.0|0.1|70B3D59BA00003A4
Interpretation
ATIM
ACW/LW8-GW
A.0
210122
1
1.0
0.1
70B3D59BA00003A4
Manufacturer
name
Product
reference
Version
of the
revision
Manufacturing
date
Manufacturing
site
Hardware
version
Application
firmware
version
LoRaWAN DevEUI

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Operating mode
L’ACW/LW8-GW is a LoRa / LoRaWAN repeater that works exclusively with ATIM devices.
Operating principle
When an ATIM device is not able to join the LoRaWAN network (private or operated), the ACW/LW8-GW repeater
allows to overcome this issue.
Figure 1 : operating principle
The ATIM product that must be repeated must be an ATIM product that is compatible with this repeater (see Limitation
chapter to check the product compatibility).
Instead of going through the LoRaWAN network to send its business frames, the product that does not have access to
the network will then modulate its LoRa messages to a repeater placed nearby. A local point-to-point communication
is then established between the product to be repeated and the repeater.
As soon as the repeater receives a local frame, it transfers it to the LoRaWAN network that it previously joined: that
way, the frame of the product is well modulated and received on the LoRaWAN network.
Repeater LoRa/LoRaWAN with
access to the LoRaWAN netwotk
Communication Local LoRa
Products ACW compatible with the
repeater LoRa/LoRaWAN and without
access to the LoRaWAN network
Local frame uplink received
on the LoRaWAN network

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Important observation
The repeater is not limited to one repeating device. Several products can operate with the same repeater. The only
limitation is the bandwidth (If two devices transmit their local frames at the same time, there will be a collision because
all the equipment involved in the repetition configuration are operating with the same radio configuration).
Installation and commissioning
•Repeater installation
For the product to be repeated, the ACW / LW8-GW Repeater must indeed be provisioned on the LoRaWAN network
and that it has joined the network. Provisioning is conventionally done in OTA (Over the Air) using information from
DevEUI, JoinEUI and AppKey.
•Configuration of the device(s) to be repeated
Once the repeater is installed, provisioned, and has joined the network, the product must be configured so that it
sends its business frames locally if no connectivity to the LoRaWAN network is found.
Indeed, this operating mode is not the default mode. The product must be configured to activate this compatibility
mode. This is done through the ACW configurator available here:
https://www.atim.com/en/downloading/
Once connected to the product, all you must do is change its radio parameters by applying the “LoRa / LoRaWAN
Repeater Mode Compat Mode” configuration as indicated below:

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Figure 2 : Configuration of the device to be repeated to activate the repeater compatibility with the LoRa/LoRaWAN repeater
Apply the new configuration by clicking on « Apply to ACW ».
The device is now compatible with the installed repeater.
•Frame decoding
Figure 3 : Payload decoding sent by the repeater
The repeater adds a header before sending the received local frame. This header allows you to know to which device
the payload is attached.
Example :
A product compatible with the repeater (devEUI: 70B3D59BA000895A) sends the “A0080885180850” frame locally.
The frame received on the LoRaWAN network will then be: "0100005A89FFFFA0080885180850".

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Limitation
•General limitations
−Currently, the repeater does not allow the downlinks to be transferred to the equipment (s) to be
repeated
−If a device to be repeated is within “radio range” of several repeaters, each repeater will transfer the local
frame (it will therefore be sent in duplicate).
•Products compatible with the repeater
Only the following products can work with the LoRa / LoRaWAN repeater (by enabling LoRa / LoRaWAN
compatibility mode in the product settings):
−ACW/LW8-MR4 (4 inputs pulse metering or state of dry contacts)
−ACW/LW8-TMxP (2 inputs PT100/1000 + 1 pulse metering or state of dry contacts)
−ACW/LW8-LVL (Silo level, river, waste bin, etc…)
−ACW/LW8-TCR (Temperature and humidity | Cold rooms)
−ACW/LW8-THAQ (Temperature + humidity + CO2 + VOC)

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Technical support
For any information or technical problem, you can contact our technical support on this page:
https://www.atim.com/en/technical-support/