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IWM-LR3 – IWM-LR4
This manual offers a simple guide for getting started with the module, as well as configuration and information
for advanced users. The IWM-LR3 - IWM-LR4 module is designed with focus on ease-of-use and reliable
operation in LoRaWAN networks.
The unit is shipped in sleep mode. All functions, including radio, are deactivated. The device activates when it is
mounted on the meter and the rotating inductive index on the meter completes +/- 5 revolutions. This equals to
+/- 5 liters on the IWM-LR3 (thus the meters CPR-M3-I, GMDM-I, GMB-RP-I and GMB-I) and +/- 50 liters on the
IWM-LR4 on the meter WDE-K50 from DN50 to 125 and +/- 500 liters on the IWM-LR4 on the meter WDE-K50
from DN150 to 200.
The following safety precautions must be observed during all phases of the operation, usage, service or repair
of this product.
•
Read the product manual.
•
Do not modify the product.
•
The product should not be exposed to extreme heat or open flame.
•
The device must not be exposed to harsh chemicals or solvents.
•
The labelling of the product may not be changed, removed or made unrecognizable.
IWM-LR3 - IWM-LR4
User Manual
1
User Manual v1.0
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Related Manuals for B meters IWM-LR3
Summary of Contents for B meters IWM-LR3
- Page 1 +/- 5 revolutions. This equals to +/- 5 liters on the IWM-LR3 (thus the meters CPR-M3-I, GMDM-I, GMB-RP-I and GMB-I) and +/- 50 liters on the IWM-LR4 on the meter WDE-K50 from DN50 to 125 and +/- 500 liters on the IWM-LR4 on the meter WDE-K50 from DN150 to 200.
- Page 2 The full joining procedure should take maximum 20 minutes. The module starts transmitting with Spreading Factor (SF) 12, for maximum performance. It will then automatically adjust the SF up to a minimum of SF7 in order to balance performance and energy consumptions. IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 3 AppEUI. For this contact B METERS support. Upon receiving your IWM-LR3 - IWM-LR4 you can request from B METERS the necessary information to connect it to your network server. This consists of the following:...
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Page 4: Physical Installation
When the meter has been digitally configured into your Lora network it is time to physically activate and install it. Prior to the installation of the IWM-LR3 - IWM-LR4 unit on the meter, remember to remove the protective metal sticker from the module. - Page 5 - On the WDE-K50 models, this corresponds to +/- 50 or 500 liters, depending on the K value set. 4. Verification of the module join procedure completion Verify on the network server that the module has joined correctly. If you require further support, please contact ticket@bmeters.com or your local distributor. IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 6 Alarms The IWM-LR3 - IWM-LR4 LoRa module have several alarm functions built in. When an alarm is detected the corresponding alarm flag in the status data is set. When an alarm flag is set the status data is included in every report.
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Page 7: Specification
Specification Versions IWM-LR3 - IWM-LR4 LoRaWAN modules Operations Operating temperature 1°C to +55°C Connectivity Network LoRaWAN Frequency bands 868 MHz Provisioning OTAA (default) & ABP (on request) Security Algorithms AES-128 Hardware Cryptographic co-processor Battery life Battery life length max. 10 years* (at 12-hour intervals, at SF12) Primary cell Lithium-Manganese 3.0V... - Page 8 Reverse flow counter (byte 3/4) Reverse flow counter (byte 4/4) Index K Medium Alarms Temperature (byte 1/2) Temperature (byte 2/2) Where by absolute value of the counters is meant: ABS (Direct flow counter - Reverse flow counter) IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 9 N.B: Pay attention to the meaning of the other parameters (for example the last 4 bytes are the low battery threshold). Refer to the supplement ‘integrators’ document: request it directly from B METERS. In the payload with Temperature parameter enabled there are at the bottom two additional bytes that indicate the temperature.
- Page 10 00012074, formally these are 12074 liters Reverse flow 00000134 so 134 liters Index 0 (1 liter) Medium 0 (water) 13 (liters) Alarms (0x02) = Module removed 00 14 (hex) is 20 (decimal) so +2,0°C Temperature IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 11 LoRa Commands The IWM-LR3 - IWM-LR4 can be controlled over by sending down link commands. 1. Acronims R2H: Reader To Host H2R: H2R: Host To Reader Fw: Firmware Reader: transceiver LoRa 2. List of commands available: Code Name Description 0x07...
- Page 12 The Device Type field indicates the type of device. The Err field in the answer can take on the following meanings: 0x00 - No Error 0x03 - Incorrect request, password was not presented 0x04 - Length Error IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 13 The Date field is as follows: Name Type Default Minimal Maximum Date Index Uint8_t Day of the week Uint8_t Sunday, 1 Monday ..) Month Uint8_t January, 2 February...) Year Uint8_t Hours Uint8_t Minutes Uint8_t Seconds Uint8_t IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 14 The Err field in the answer can take on the following meanings: 0x00 - No Error 0x01 - Invalid date error 0x02 - Device TypeError. The device type is incorrect. 0x03 - Incorrect request, password was not presented 0x04 - Length Error IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 15 The command used to read counters. Data fields larger than bytes will be represented in MSB first. R2H: HEADER property Date Device Type C/R/A Chain property 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 0x17 0x01 0x04 IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 16 The Date field is as follows: Name Type meaning 0 Inactive count Active Uint8_t 1 Active Count 0 1 litre K Index Uint8_t 1 10 litres 2 100 litres 0 Water Medium Uint8_t 1 Hot water IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 17 1 byte 1 byte 1 byte 1 byte 1 byte 1 byte 8 bytes 0x26 0x09 0x04 H2R: HEADER property C/R/A Chain 1 byte 1 byte 1 byte 1 byte 1 byte 0x26 0x00 IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 18 The Err field in the answer can take on the following meanings: 0x00 - No Error 0x02 - Device TypeError. The device type is incorrect. 0x03 - Incorrect request, password was not presented 0x04 - Length Error IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 19 The Err field in the answer can take on the following meanings: 0x00 - No Error 0x02 - Device TypeError. The device type is incorrect. 0x03 - Incorrect request, password was not presented 0x04 - Length Error IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 20 The Err field in the answer can take on the following meanings: 0x00 - No Error 0x01 - Parameter error out of range 0x02 - Device TypeError. The device type is incorrect. 0x03 - Incorrect request, password was not presented 0x04 - Length Error IWM-LR3 - IWM-LR4 User Manual v1.0...
- Page 21 0x29, 0x01, 0x00, 0x00, 0x00 Contact Info B METERS srl Via Friuli, 3 • Gonars 33050 (UD) • ITALY Tel: +39 0432 931415 Fax: +39 0432 992661 E-Mail (sales/info): info@bmeters.com E-Mail (support): ticket@bmeters.com Web: www.bmeters.com IWM-LR3 - IWM-LR4 User Manual v1.0...