ATIM ACW-MR2 User manual

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
1. TECHNICAL SPECIFICATIONS
Internal supply voltage: 3.6 VDC
Supply current with radio functioning: 50 mAmax for 6 s
Supply current on standby with batteries: 2 µAtyp
Digital input voltage: 3.6 Vmax
Operating temperatures: -25°C –60°C
Radio power: 25 mW 14 dBm
Radio frequency: 868 MHz
Operated network: Sigfox or LoRaWAN
Power supply:
•One or two 3.6 V lithium batteries
Configuration:
•Via DIP switches
•Via downlink
Check Sigfox coverage:
•atim.com/sigfox/coverage
Access to data:
•At https://acw.atim.com
•On your server
Atim Cloud Wireless - Metering
2 digital inputs –1 wirecut input
Installation guide
ACW-MR2/SF8/LW8

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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2. POWER INTERRUPT MAGNET
You can cut power to the device by placing a
magnet on the right side. A keep-alive frame and a
test frame are transmitted automatically when the
device starts up, allowing you to verify the
installation on-site. Because the product consumes
very little power in stand-by mode, you may have to
leave the magnet in place for 30 seconds to ensure
that the device restarts correctly.
3. INSTALLATION
You must open the casing in order to
gain access to module’s configuration
switches and to the terminal blocks. To
do this, insert a screwdriver into the slot
and tilt it downward to lift the inside tab
(see photo opposite). Then pull on the
back panel to separate the two parts of
the casing.
For optimal results, it is recommended
that you install the modem away from
all environmental obstructions, at least
2m above the ground and not right
against a wall —ideally at least 20cm
away. The cables must be no longer
than 10m and must be shielded.
Note that the antenna is integrated into
the casing.
The casing can be mounted on a flat
wall or on a tube, depending on the
installation type you prefer.
‘TILT’
2 m

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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4. IDENTIFICATION
The sensor ID is visible on the exterior product label and next to the batteries inside the device.
The battery polarity is indicated on the circuit
board. The + pole points toward the terminal block
and the –pole toward the antenna. The insulation
tab must be pulled out from one of the battery
terminals before you first use the device.
If a second battery is added, it must be added in
parallel, in the same direction as the first battery.
Start-up phases:
From 0 to 3 sec: bootloader.
From 3 sec to 8 sec: configuration
From 8 sec to 10 sec: configuration is applied, green
LED flashes, red LED flashes if Wirecut is detected.
After 15 sec: switches to stand-by
From 1 min to 5 min: keep-alive frame sent out for
the 1st minute, then a message frame every minute.
The keep-alive frame is then transmitted every 4
days.
You can connect:
•CNTR 1: One dry-contact fast meter input (max 1 kHz): “Counter 1”or 1 digital input
•WIRECUT: 1 dry-contact for to monitor disconnection/cut wire. This input is monitored
once/min.
•CNTR 2: 1 dry-contact slow meter input (max 10 Hz): “Counter 2”or 1 digital input
•GND: Ground

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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5. ATTACHING GAS METERS
ATIM can provide a cable (ref. CAB/MTRGAZ1) with the following features to connect to gas meters
with an IP40 M16 connector:
6-wire shielded cable with a 20 AWG cross section and 2 metres in length.
PIN
COLOUR
SIGNAL
1
Brown
Monitoring +
2
White
GND –Monitoring
3
Grey
Meter 2 +
4
Blue
Meter 1 +
5
Yellow
GND –Meter 2
6
Green
GND –Meter 1
6. ATTACHING OPTICAL SENSOR IN ‘ELEC’ MODE
The ACW/XXX-MR1-ELEC reference is delivered with a Fludia optical sensor (4-wire cable, 30
centimetres in length).
IMPORTANT: The weight of the pulses is different at the sensor output (1 output pulse = 5 input
light pulses).
PIN
COLOUR
SIGNAL
2
Black
Power supply
7
Red
Meter 1 +
8
Green
GND –Meter 1
8
Yellow
GND –Power
NOTE: In MR1-ELEC mode, the ‘METER 1+’ signal must be connected to the ‘CNTR 1’ input.
Powering an external sensor will reduce the product’s lifespan.
Female DIN connector, as seen from outside

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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7. CONFIGURATION
Configuration can be performed locally, using the internal switches, or remotely, by sending
downlink frames. By default, the product uses the configuration indicated by the switches if no
configuration has been specified via downlink frames.
If a configuration has been applied via downlink, it will be used the next time the device restarts.
a. Configuration with internal DIP switches:
The configuration is read at start-up. The table below lists the different modes of operation that
can be configured.
Meter mode: periodic sampling of values from both meter inputs (even if only one input is used) and
regular transmission of the data.
Digital mode: The state of both inputs is transmitted if either of their states change.
ELEC mode: Periodic sampling of meter 1 every X minute, with one transmission for every 6
readings.

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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ON
OFF
METER
MODE
Radio transmission period (METER READING frame): 10 min
Radio transmission period (METER READING frame): 30 min
Radio transmission period (METER READING frame): 1 hr
Radio transmission period (METER READING frame): 3 hr
Radio transmission period (METER READING frame): 6 hr
Radio transmission period (METER READING frame): 12 hr
Radio transmission period (METER READING frame): 24 hr
Radio transmission period (METER READING frame): 48 hr
DIGITAL
MODE
Checks the state of the inputs every minute.
Radio transmission if state change detected (DI2-TRIGGER frame
if contact changes).
Radio transmission on falling edge (DI2-TRIGGER frame when
contact is closed). See Section 1.9 COMMENT ON DIGITAL MODE
Radio transmission on rising edge (DI2-TRIGGER when contact is
opened). See Section 1.9 COMMENT ON DIGITAL MODE
Radio transmission on rising and falling edge (DI2-TRIGGER when
contact state changes). See Section 1.9 COMMENT ON DIGITAL
MODE
ELEC
MODE
Radio transmission period (METER MULTI-READING frame): 1 hr
1 Delta / 10 min
Radio transmission period (METER MULTI-READING frame): 3 hr
1 Delta / 30 min
Radio transmission period (METER MULTI-READING frame): 6 hr
1 Delta / 60 min
NC
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
4

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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b. Configuration via downlink frames:
This feature is available on ACW-MR2 models that meet the following conditions:
Software product:
SIGFOX version
Not available
LoRaWAN version
v2.2.4
or higher
The document ATIM_ACW-DLConfig_UG_FR_v1.1 explains how the downlink works with regard to
version v1.1 of the ATIM Downlink Protocol.
The ATIM Downlink Protocol v1.1, used by all products in the ACW line, describes how to perform
the following actions:
-Request a restart for ACW devices
-Obtain product information
-Request that factory settings be restored
-Obtain a product’s current parameter settings
The parameters specific to ACW-MR2 models are:
a. Keep-alive frame frequency
Parameter code (1 byte)
Parameter value (2 bytes)
0x03
The possible values are:
0x04 = every 10 minutes
0x05 = every hour
0x0A = every 2 hours
0x0B = every 4 hours
0x0C = every 8 hours
0x06 or 0x09 = once per day
0x0D = every 2 days
0x0E = every 3 days
0x0F = every 4 days
0x07 = every 7 days
0x08 = every 30 days

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b. Mode of operation:
Parameter code (1 byte)
Parameter value (2 bytes)
0x0A
The possible values are:
0x00 = meter mode with transmission every 10 minutes
0x01 = meter mode with transmission every 6 hours
0x02 = meter mode with transmission every hour
0x03 = meter mode with transmission every 3 hours
0x04 = meter mode with transmission every 30 minutes
0x05 = meter mode with transmission every 12 hours
0x06 = meter mode with transmission every 24 hours
0x07 = meter mode with transmission every 48 hours
0x08 = digital mode with polling of wirecut input
0x09 = digital mode with radio transmission on falling edge
0x0A = digital mode with radio transmission on rising edge
0x0B = digital mode with radio transmission on falling and
rising edges
0x0C = ELEC mode with readings every 10 minutes +
transmission once per hour
0x0D = ELEC mode with readings every 30 minutes +
transmission every 3 hours
0x0E = ELEC mode with readings once per hour +
transmission every 6 hours
0x0F = N/A
0x10 = use the DIP switch configuration
Reminder: By default, the product uses the configuration indicated by the DIP switches if no
configuration has been specified via downlink frames. If a configuration has been applied via
downlink, it will be used the next time the device restarts.
c. Setting meter 1:
The index of meter 1 can be set to any value you choose in the range from 0 to 4294967295.
Command to send
Parameter value (4 bytes)
C1050Axxxxxxxx
Possible values for xxxxxxxx (in hexadecimal):
0x00000000
to
0xFFFFFFFF
Example: To set the index of meter 1 to 1000, you must send the command C1050A000003E8 via
downlink (because 1000 = 3E8 in hexadecimal).

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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d. Setting meter 2:
The index of meter 2 can be set to any value you choose in the range from 0 to 4294967295.
Command to send
Parameter value (4 bytes)
C1050Bxxxxxxxx
Possible values for xxxxxxxx (in hexadecimal):
0x00000000
to
0xFFFFFFFF
Example: To set the index of meter 2 to 500, you must send the command C1050A000001F4 via
downlink (because 500 = 1F4 in hexadecimal).
e. Setting meter 1 and meter 2:
The index of meters 1 and 2 can be set with a single command to any value you choose in the
range from 0 to 4294967295.
Command to send
Parameter value (4 bytes)
C1090Cxxxxxxxxyyyyyyyy
Possible values for xxxxxxxx and yyyyyyyy (in
hexadecimal):
0x00000000
to
0xFFFFFFFF
Example: To set the index of meter 1 to 1000 and the index of meter 2 to 5000, you must send the
command C1090C000003E800001388 via downlink (because in hexadecimal, 1000 = 3E8 and 5000
= 1388).

ACW-MR2_QIG_FR_V2.5 - Complete technical manual available at www.atim.com -
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8. FORMAT OF THE SIGFOX - LORAWAN FRAME
The data will be different depending on the type of frame transmitted and the mode of operation
(Meter, Digital, MR1-ELEC). For example:
TYPE
DESCR.
FRAME FORMAT
octet
0
(dec)
octet
0
(hex)
octet
1
(hex)
octet
2
(hex)
octet
3
(hex)
octet
4
(hex)
octet
5
(hex)
octet
6
(hex)
octet
7
(hex)
octet
8
(hex)
octet
9
(hex)
octet 10
(hex)
octet
11
(hex)
KEEP ALIVE
Periodical
frame: device
status
1
01
Supply
voltage IDLE
(mV)
Supply
voltage TX
(mV)
64
METER
READING
Periodical
frame with
index values
20
14
-bit0-
WIRE
CUT
Meter index 1
Meter index 2
WIRECUT
Alert frame if
cable is cut
55
37
-bit0-
WIRE
CUT
TRIGGER
State change
(Digital)
9
09
00
XX
bit7
bit6
bit5
bit4
bit3
bit2
bit1
bit0
NC
NC
NC
NC
NC
WIRE
CUT
Logic
Level
In 2
Logic
Level
In 1
LoRaWAN
METER
MULTI-
READING
(conca-
tenated)
Multi-index
frame « ELEC »:
Meter 1 index
on 32 bits + 5
deltas on 32
bits
(concatenated)
48
30
Index 5
(32bits)
(Tref-50min)
Index 4
(32bits)
(Tref-40min)
Index 3
(32bits)
(Tref-30min)
Index 2
(32bits)
(Tref-20min)
Index 1
(32bits)
(Tref-10min)
Index 0
(32bits)
(Tref)
LoRaWAN
Test frame
49
31
Index meter 1
(32bits)
SIGFOX
METER
MULTI-
READING
(conca-
tenated)
Multi-index
frame « ELEC »:
Meter 1 index
on 20 bits + 5
deltas on 12
bits
(concatenated)
57
39
Réf. Index
(20 bits)
(Tref)
Delta 1
(12bits)
(Tref-10min)
Delta 2
(12bits)
(Tref-20min)
Delta 3
(12bits)
(Tref-30min)
Delta 4
(12bits)
(Tref-40min)
Delta 5
(12bits)
(Tref-50min)
58
3A
Delta 1
(12bits)
(Tref-30min)
Delta 2
(12bits)
(Tref-60min)
Delta 3
(12bits)
(Tref-90min)
Delta 4
(12bits)
(Tref-120min)
Delta 5
(12bits)
(Tref-150min)
59
3B
Delta 1
(12bits)
(Tref-60min)
Delta 2
(12bits)
(Tref-120min)
Delta 3
(12bits)
(Tref-180min)
Delta 4
(12bits)
(Tref-240min)
Delta 5
(12bits)
(Tref-300min)
TEST
Test frame
5
05
CNTR
*Tref = time of transmission
9. COMMENT ON DIGITAL MODE
When Digital mode is active and the contact on the input is closed, the product draws much more
current than it does on standby (100 µA instead of 2 µA). To avoid this problem on systems with
slow state changes, please use the mode ‘Check the state of the inputs every minute’.