Badger Meter ModMAG M2000 mag flow meter

Register map(s) for this device, with a note of how far each has been checked. Addresses are 0-based, as on the wire. Scale and byte order are confirmed only at the hardware-verified rung.

coherence-checked

Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.

point	address (0-based)	type	scale	unit
Product Code	0	U16	1
Product Name	1	U16	1
Firmware Name	9	U16	1
Application Version	25	U16	1
Compile Date	35	U16	1	MM:DD:YYYY
Compile Time	51	U16	1	HH:MM:SS
PCB Serial Number	67	U16	1
OTP Boot Checksum	72	U16	1
Flash OS Checksum	75	U16	1
Boot Version	78	U16	1
OS Version	83	U16	1
Daughterboard Product Type	87	U16	1
Daughterboard Major Version	88	U16	1
Daughterboard Minor Version	89	U16	1
Power On Splash Line 1	90	U16	1
Detector Diameter	111	U16	1
Detector Diameter Other	112	U16	1	mm
Detector Factor	113	F32BE	1
[FACTORY] Detector Factor	115	F32BE	1
Detector Offset	117	F32BE	1	m/s
[FACTORY] Detector Offset	119	F32BE	1
Amplifier Factor	121	F32BE	1
[FACTORY] Amplifier Factor	123	F32BE	1
Detector Current	125	F32BE	1	mA
[FACTORY] Detector Current	127	F32BE	1	mA
Power Line Frequency	129	U16	1	Hz
Excitation Frequency	130	U16	1	Hz
Flow Unit	131	U16	1
Volume Unit	132	U16	1
Unit Multiplier	133	U16	1
Full Scale Velocity	134	F32BE	1	m/s
[FACTORY] : Analog Output Calibration Point A	136	F32BE	1	A
Fixed Current Mode	138	F32BE	1
[FACTORY] : Analog Output Calibration Point B	140	F32BE	1	A
Low Flow Cutoff	142	F32BE	1	%
Full Scale Flow	144	F32BE	1	User Units
Flow Direction	146	U16	1
Damping Factor	147	U16	1	s
Digital Input: Input Operation	148	U16	1
Analog Output Range	149	U16	1
Analog Output Offset	150	F32BE	1
Output #1: Pulses Per Unit	152	F32BE	1	m3
Output #1: Pulses Per Unit	156	F32BE	1	user units
Output #1: Pulse Width	160	U16	1	ms
Output #1: Flow Alarm Minimum	161	U16	1	%
Output #1: Flow Alarm Maximum	162	U16	1	%
Output #1: Output Mode	163	U16	1
Output #1: Output Operation	164	U16	1
Output #2: Pulses Per Unit	165	F32BE	1	m3
Output #2: Pulses Per Unit	169	F32BE	1	user units
Output #2: Pulse Width	173	U16	1	ms
Output #2: Flow Alarm Minimum	174	U16	1	%
Output #2: Flow Alarm Maximum	175	U16	1	%
Output #2: Output Mode	176	U16	1
Output #2: Output Operation	177	U16	1
Output #3: Full Scale Frequency	178	U16	1	Hz
Output #3: Flow Alarm Minimum	179	U16	1	%
Output #3: Flow Alarm Maximum	180	U16	1	%
Output #3: Output Mode	181	U16	1
Output #3: Hardware Select	182	U16	1
Output #3: Output Operation	183	U16	1
Output #4: Flow Alarm Minimum	184	U16	1	%
Output #4: Flow Alarm Maximum	185	U16	1	%
Output #4: Output Mode	186	U16	1
Output #4: Hardware Select	187	U16	1
Output #4: Output Operation	188	U16	1
Port A: Packets Processed	189	U16	1
Port A: Broadcast Packets	190	U16	1
Port A: CRC Errors	191	U16	1
Port A: Packets Received	192	U16	1
Port A: Packets Sent	193	U16	1
Port A: Parity Errors	194	U16	1
Port A: Framing Errors	195	U16	1
Port A: Overrun Errors	196	U16	1
Port A: Break Detects	197	U16	1
Port B: Packets Processed	198	U16	1
Port B: Broadcast Packets	199	U16	1
Port B: CRC Errors	200	U16	1
Port B: Packets Received	201	U16	1
Port B: Packets Sent	202	U16	1
Port B: Parity Errors	203	U16	1
Port B: Framing Errors	204	U16	1
Port B: Overrun Errors	205	U16	1
Port B: Break Detects	206	U16	1
T1 / T+	207	F32BE	1	m3
T1 / T+	211	F32BE	1	User Units
T2 / T-	215	F32BE	1	m3
T2 / T–	219	F32BE	1	User Units
T3 / TN	223	F32BE	1	m3
T3 / TN	227	F32BE	1	User Units
T1 / T+ Rollover Counter	231	U16	1
T2 / T– Rollover Counter	232	U16	1
Flow Velocity	233	F32BE	1	m/s
Preset Batch Totalizer	235	F32BE	1	m3
Flow Rate	237	F32BE	1	m3/s
Preset Batch Totalizer	239	F32BE	1	User Units
Flow Rate	241	F32BE	1	User Units
Relative Flow Rate	243	F32BE	1	%
Power Up Counter	245	U16	1
Detector Error Counter	246	U16	1
Empty Pipe Counter	247	U16	1
Full Scale Counter	248	U16	1
Totalizer Overflow Counter	249	U16	1
Reserved	250	U16	1
Reserved	251	U16	1
Pulse Sync Counter	252	U16	1
ADC Interrupt Counter	253	U16	1
ADC Range Counter	254	U16	1
WDT Resets Counter	255	U16	1
WDT Location	256	U16	1
System Error #	257	U16	1
Token Error Counter	258	U16	1
Reserved	259	U16	1
Reserved	260	U16	1
Reserved	261	U16	1
Meter Status	262	U16	1
Power Loss Totalizer	263	U32BE	1	seconds
Action Request Overflows	265	U16	1
Measurement Overflows	266	U16	1
Scale Factor	267	F32BE	1	%
Zero Scale Flow	269	F32BE	1	User Units
Display Backlight Mode	271	U16	1
Preset Batch Amount	272	F32BE	1	m3
Menu Reset Allowed	274	U16	1
Menu Language Setting	276	U16	1
Analog Input Measure Value	277	F32BE	1
File System – Number of Records to Read	279	U16	1
Port B Extended Address	280	U16	1
Analog Input Measure Counter	281	U16	1
Empty Pipe Actual Resistance	282	F32BE	1	Ohms
Security Status	284	U16	1
Configuration Status	285	U16	1
Empty Pipe Calibration	286	F32BE	1	Volts
Empty Pipe Measure Value	288	F32BE	1	Volts
Full Pipe Calibration	290	F32BE	1	Volts
Empty Pipe Mode	292	U16	1
Command Action Request	293	U16	1
Analog Output Calibration Point A	294	F32BE	1	A
Analog Output Calibration Point B	296	F32BE	1	A
Flow Simulation	298	I16	1
Random Value	299	U32BE	1
Flow Direction	301	U16	1
Alarm Mode	302	U16	1
Remote Login	303	U32BE	1
Analog Output Slope	305	F32BE	1
Analog Customer Offset 4 mA	307	F32BE	1	A
Analog Customer Offset 20 mA	309	F32BE	1	A
T1 / T+ Display String	311	U16	1
T2 / T– Display String	319	U16	1
T3 / TN Display String	327	U16	1
Analog Output Current	334	F32BE	1	A
Analog Output Current String	336	U16	1	mA
Remote Resets	340	U16	1
Digital Input: Status	341	U16	1
Power On Splash Line 2	342	U16	1
Meter Tag Name	353	U16	1

link settings as documented (unverified): RTU; FC 03,04,06,16; Port A (pins 5,6,7) supports MODBUS RTU using RS232. RS485 is supported as an accessory daughterboard (p/n 67079-003).

bench facts as documented (unverified)

terminals	Port A (pins 5,6,7) for RS232
wiring notes	RS485 supported via accessory daughterboard p/n 67079-003
protocol notes	Write function codes are not accepted while menu navigation is in process. Writes update volatile memory; must write 0x01 to Command Action Request Register (0x0125) to save to non-volatile memory.
model register	0x0001
serial register	0x0043
firmware register	0x0009
identification notes	Product Code at 0x0000, Product Name at 0x0001, Firmware Name at 0x0009, PCB Serial Number at 0x0043
doc revision	IAB-189-01-EN (August 2012)

field reports — community-sourced, unverified (checked 2026-06-11)

confirmed: Port A (pins 5,6,7) supports MODBUS RTU using RS232. RS485 is supported as an accessory daughterboard (p/n 67079-003). — confirmed by Badger Meter M2000 Modbus Memory Map Application Brief
confirmed: Write function codes are not accepted while menu navigation is in process. Writes update volatile memory; must write 0x01 to Command Action Request Register (0x0125) to save to non-volatile memory. — confirmed by Badger Meter M2000 Modbus Memory Map Application Brief
confirmed: Product Code at 0x0000, Product Name at 0x0001, Firmware Name at 0x0009, PCB Serial Number at 0x0043 — confirmed by Badger Meter M2000 Modbus Memory Map Application Brief

The trust ladder

Each rung states what it proved and what it did not. Gray until proven; green is earned by hardware only.

generated — A prompt produced it. Unproven — anyone can regenerate this.
structure-verified — Decode path is structurally sound (addresses, widths, finite values). Does NOT prove word order or scaling.
coherence-checked — Round-trips through a real Modbus stack with no overlapping addresses and a word-order-sensitive codec — the map is internally coherent and wire-decodable. Does NOT prove byte-order or scaling match a real device: the emulator is seeded from the map's own types, so a uniformly wrong byte-order still round-trips. Only hardware-verified confirms byte-order/scale on the wire.
hardware-verified (software-key) x1 — Matched a real device with operator-attested readings as ground truth — the only rung that confirms word order + scaling on the wire.

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