User Manual v1.1
RFM-LR1
Index
Description
Datatype
Encoding
Valid range
Access
Unsolicited
Description
Note
0x03
FW build hash
6 x Uint8
Query
No
Unique number that identifies the firmware version
0x05
Device reset
Action
No
Reset of device
0x06
CPU voltage
Uint8
25mV/
LSB
0 - 3.6V
Query
No
Read CPU voltage.
Max/min ranges depend on battery chemistry.
0x0A
CPU temperature
Uint16
Big endian
0.01C /
LSB
-50 - +125 C
Query
No
Temperature from CPU sensor with 50 °C offset.
Approximately 5 °C accuracy.
0x20
Status
Uint8
Bitfield
Set
Query
Yes
Bit 7: Flow exceeds Q3 at least for 10 min
Bit 6: -
Bit 5: Magnetic fraud attempt
Bit 4: -
Bit 3: Module removed
Bit 2: -
Bit 1: -
Bit 0: Leakage during last 24 hours
To clear alarms:
0xFF clears no 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
Big endian
Minutes
1-10080
Set
Query
No
Reporting interval in minutes
0x25
Starting value
Uint32
Big endian
Liter
Set
Query
No
Volume as indicated on meter
x 0.001 m3
0x27
Back flow volume
Uint32
Big endian
Liter
Query
No
Volume as indicated on meter
x 0.001 m3
0x2B
Q3MaxFlow
Uint16
Big endian
Liters per hour
0 - 65535
Set
Query
No
Corresponds to mechanical meter Q3 (based on pipe)
0x2C
Leak Window size
Uint8
Number of 15
seconds samples 1 - 255
Set
Query
No
The size, in units of 15 seconds sample windows, in
which we expect flow below “zero tolerance” to reset
leak detection
0x2D
Leak Zero tolerance UInt8
Opto phase
changes
0 - 255
Set
Query
No
Zero tolerance, max number of shaft phase changes
considered “not moving”.
