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RFM-LR1

6

User Manual  v1.1

Protocol

The protocol consists of different types of data

LoRaWAN v.1.0.2 standard commands 

Unsolicited uplink status commands during configure state

Periodic measurement reports

Downlink commands and queries

Uplink query response

Note 0x denotion means hexadecimal encoded.

 

Unsolicited uplink status commands

The sensor polls the server for configuration parameters the during the 

Configure

 state. This is done by sending 

unsolicited uplink status report (0x20). This is gives quick feedback to the installer that the installation has 

been successful and enables downlink configuration commands to be sent. After approximately 2 minutes the 

device changes to 

Operational

 state. 

Port: 

Port 1

Payload   0x01 20 00

                 0x01: Data type

                 0x20: Status command

                 0x00: bit0 =0 => Normal startup

 

 

 bit1 =0 => No boot problem

 

 

 bit2-7 reserved

The expected behavior is 0x01 20 00.

Downlink commands and queries

This describes the payload data that is sent to and from the application server. All downlink application 

communication is done on LoRaWAN 

port 1

.

Uplink command device => network

Field 

Bytes

Value

Description 

Note

Type

1

xx

0x01: Data

0x02: Command NACK

Index

1

xx

Command Index 

Data

As defined for Command Index (only for Type: Data) 

Downlink command network => device

Field 

Bytes

Value

Description 

Note

Type

1

xx

0x01: Set 

0x02: Query

0x03: Action 

Index

1

xx

Command Index 

Data

As defined for Command Index only applicable for set-commands

Summary of Contents for RFM-LR1

Page 1: ...deactivated The device activates when the red button is pressed for more than 8 seconds This happens automatically when the unit is mounted on to a GSD8 RFM mechanical water meter The following safety...

Page 2: ...essages are received The device tries to re join the network if it has not heard anything from the network for 288 uplinks 36 days Startup Sequence When the device has joined the network startup trans...

Page 3: ...al Physical installation process 1 Mount RFM LR1 unit on the water meter 2 Mount the locking pin and seal If you require further support please contact support bmeters com or your vendor Activating on...

Page 4: ...n this alarm flag is set Magnetic fraud attempt The module has a detector that can sense if a magnet is used to manipulate the function of a dry dial water meter If a magnet is sensed the alarm flag i...

Page 5: ...re key storage Battery life Battery life length 10 years at 4 hour intervals at SF12 Primary cell Lithium Manganese 3V Capacity 2 2 Ah Method Optical readout Using infrared diodes Weight Weight 85 g C...

Page 6: ...mands to be sent After approximately 2 minutes the device changes to Operational state Port Port 1 Payload 0x01 20 00 0x01 Data type 0x20 Status command 0x00 bit0 0 Normal startup bit1 0 No boot probl...

Page 7: ...o alarms 0x00 clears all alarms 0x80 clears all alarms except module removed etc 0x21 Volume Uint32 Big endian Liter Query Yes Volume as indicated on meter x 0 001 m3 0x22 Reporting interval Uint16 Bi...

Page 8: ...ting Module removed alarm flag Downlink 012000 Uplink 012000 Resets all alarm flags Downlink 012205A0 Uplink 012205A0 Sets the Reporting interval to 1440 minutes 24 hours Downlink 0227 Uplink 01270000...

Page 9: ...on slots parameters 0x05 RXParamSetupAns End device Acknowledges a RXSetupReq command 0x06 DevStatusReq Gateway Requests the status of the end device 0x06 DevStatusAns End device Returns the status of...

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