ATIM LoRaWAN ACW/LW8-DIN-RSM User manual

Concerned models:
ACW/LW8-DIN-RSM
(Modbus master)
ACW/SF8-DIN-RSM
(Modbus master)
ATIM Cloud Wireless
Modbus PLC connector
DIN-RSM / RS485
User Guide

ATIM_ACW-DINRSM_UG_EN_V2.8
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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. Environment ...............................................................................................................................................3
b. Radio...........................................................................................................................................................4
Technical specifications ...........................................................................................................................5
Installation ...............................................................................................................................................6
a. Positioning ..................................................................................................................................................6
b. Connecting the modem ..............................................................................................................................7
c. Push button ................................................................................................................................................7
d. Interpreting the indicator lights..................................................................................................................8
Normal start-up behaviour ......................................................................................................................8
Parameter settings and configuration .....................................................................................................8
a. Parameter settings......................................................................................................................................8
b. Configuration via USB ...............................................................................................................................12
Transmitting information on IoT networks (Sigfox/LoRaWAN):............................................................17
a. Keep-alive frame.......................................................................................................................................17
b. Periodic frame (or triggered by pressing button) .....................................................................................17
c. Error frame ...............................................................................................................................................17
Receiving information from IoT networks (Sigfox/LoRaWAN) ..............................................................19
a. Parameters................................................................................................................................................19
b. Commands................................................................................................................................................22
Troubleshooting.....................................................................................................................................28
a. The modem cannot be configured via USB or the configuration tool page does not refresh..................28
b. Radio data not received............................................................................................................................28
c. Modem LED is not flashing .......................................................................................................................28
Technical support...................................................................................................................................28

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Document version history
Document
version
Date
Description
Author
Affects software
version
2.8
25/02/2020
- Downlink command addition for
Modbus writing/reading
- Increase of the number of Modbus
requests from 32 to 49.
YL
3.3.5
2.7
23/05/2019
Connections board corrections
SC
3.2.3
2.6
21/05/2019
Version DIN-RSM and orthograph
corrections
Restriction of use in RS485
Graphics updated
ER
MD
3.2.3
2.4
30/03/2018
Correction of values for configuring the
number of bits of serial link.
AM
3.2.0
2.3
09/02/2018
First English version based on
UG_FR_V2.3
YM
3.2.0
Disclaimer
The information contained in this document is subject to change without warning and does not represent a
commitment on the part of ATIM.
Trademarks and copyright
ATIM, 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.

ATIM_ACW-DINRSM_UG_EN_V2.8
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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. 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.
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.
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 other 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 center closest to your home, contact your closest local government office,
your local waste management service or the business from which you purchased the product.
b. 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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Technical specifications
Dimensions
90 x 57 x 17.9 mm
Antenna
External via SMA connector
Temperature
-20°C to +55°C (operation)
-40°C to +70°C (storage)
Mounts to
DIN rail
Power supply
1x power supply, 10-30 V DC
Frequency
865 –870 MHz
Power
25 mW (14 dBm)
Transfer rate
Sigfox: 100 bps
LoRaWAN: 300 bit/s to 10 kbit/s
Current draw (24 V)
Sigfox:
LoRaWAN:
Tx mode (max)
40 mA
25 mA
Rx mode (max)
30 mA
10 mA

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Space requirements and mounting
Dimensions indicated in mm.
‘Circuit-breaker’-style ACW DIN modems are mounted on a DIN rail.
Installation
a. Positioning
This version was designed for installation in an electrical box made of PVC or metal. If the box is made of
insulating material (PVC, ABS, fibreglass), you can also simply use a small ½ wave whip antenna: Ref. ATIM
ANT868-12FSC. This antenna must be firmly screwed onto the SMA connector and positioned vertically,
preferably pointing upward.
➔If a metal box is used, the antenna must be positioned outside the box in order to ensure good radio
performance and avoid the ‘Faraday cage’ effect.
For optimal results, we recommend that the antenna be positioned high up and at least 1 metre away from
all metallic objects.

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b. Connecting the modem
Terminal blocks:
Antenna (SMA):
Before connecting the product to mains power, connect the antenna: either a ½ wave whip
antenna (ref. ATIM ANT868-12FSC) or an external antenna —¼ wave (ref. ATIM ANT868-
14S4.0) with a metallic ground plane or ½ wave (ref. ATIM ANT868-12S3.8) —or a roof
antenna with a low-loss cable (ref. ATIM ANT868-BZ or ANT868-08).
Power supply (bottom terminal block):
The ACW-DINRSM must be supplied with a DC power supply between 10 V and 30 V that can
provide a minimum current of 100 mA.
RS485 (top terminal block):
The maximum cable length will depend on the type of serial link and the baud rate in use. A maximum length
of 1 metre is appropriate for all use cases.
For an RS485 connection, you have the option to activate the 120Ω termination resistor:
•up (SMA side): resistor activated
•down (USB side): resistor deactivated
USB:
The USB connector allows you to configure the ACW with a PC and a USB cable. See section « Configuration
via USB » for more details.
To configure the device, it must be connected to power at 10/30 V DC.
c. Push button
The push button located on the front panel of the housing can be used to initiate a
Modbus/Radio cycle. This lets you test the Modbus configuration and radio connectivity. If no Modbus frame
is configured, a ‘keep-alive’ frame will be sent.
Name
Description
In / Out
GND
Earth/Ground (Gnd)
Earth
10/30V
Power supply between 10 V and 30 V
Input (power supply)
NC
Not connected
/
Tx/BZ
RS485 BZ
Bidirectional/differential
Rx/AY
RS485 AY
Bidirectional/differential
NC
Not connected
/

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d. Interpreting the indicator lights
The indicator lights are used to display the state of operation of the DINRSM. In general, a
green light indicates correct operation, while a red light indicates an error.
Success or failure of an operation
Behaviour:
The red or green flashes rapidly for about ½ second. A red light indicates failure, while a
green light indicates success.
Event:
⚫When switching on the device (after a brief delay) to indicate it has started up correctly.
⚫After a Modbus frame if the response fails (red light).
USB connection or radio activity
When a radio message is sent over the network, the green light flashes every half-second
while it is being sent. This may last for up to one minute. This light flashes in a similar manner when the
product is connected via USB.
Modbus communication
During Modbus communication, the green light remains on throughout the entire process. If a Modbus error
is detected, the red light will flash rapidly.
Normal start-up behaviour
When the device is switched on, after a brief delay, the green light flashes rapidly for about
½ second to indicate that the device has started up correctly. The periodic frame is then sent out, based on
the statement period specified in the settings. If a USB cable is connected to the DINRSM, the green light will
flash as long as that connection is in place.
Parameter settings and configuration
a. Parameter settings
Serial link parameters:
The RS serial link can be configured with different parameters. Not all parameter settings are
compatible with one another.
The configurable parameters are as follows: 8N1, 8N2, 8E1, 8O1, 7N2, 7O1, 7O2, 7E1, 7E2.

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Type of serial link:
⚫Only RS485
Serial link baud rate:
⚫1200 bps
⚫2400 bps
⚫4800 bps
⚫9600 bps
⚫19200 bps (default)
⚫38400 bps
⚫57600 bps
⚫115200 bps
Serial link parity:
⚫No parity (default): N
⚫Even: E
⚫Odd: O
Number of bits for the serial link:
⚫7 bits
⚫8 bits (default)
Number of stop bits for the serial link:
⚫1 bit (default)
⚫2 bits
Frame period:
A complete radio cycle is composed of two phases: 1/ sending requests to one or several Modbus slave(s),
2/ broadcasting retrieved Modbus data via radio communication.
During requesting phase, up to 32 Modbus request frames are sent through serial link to slave Modbus
equipment, which return data requested by the ACW-DINRSM.
During radio emission phase, Modbus registers or bits retrieved by ACW-DINRSM are broadcast under one
or several frames according to the configuration.
The interval for this cycle is once per hour by default but can be configured for intervals ranging from 10
minutes to 28 days, in increments of 1 minute.