Armstrong Design Envelope 4300/4380 pump with IVS drive

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
Actual Speed	100	U16	1	RPM
Actual Speed	101	U16	0.1	%
Motor Power	102	U32BE	0.01
Motor Input Voltage	104	U16	0.1	V
Motor Input Current	105	U32BE	0.01	A
Sensorless Head	107	U32BE	0.01
Sensorless Flow	109	U32BE	0.01
Total Flow	111	U32BE	0.01
Total Power	113	U32BE	0.01
Number of Running Pumps	115	U16	1
Max Sensorless Flow	116	U32BE	0.01
Max Sensorless Head	118	U32BE	0.01
Status	122	U16	1
Digital In	200	U16	1
Analog In 1	201	U32BE	0.01	V/mA
Analog In 2	203	U32BE	0.01	V/mA
Analog Out 1	205	U16	0.01	mA
Digital Out	206	U16	1
Relays	207	U16	1
Flow Units	250	U16	1
Pressure Units	251	U16	1
Power Units	252	U16	1
Speed Units	253	U16	1
Temperature Units	254	U16	1
Total Pump Running Hours	275	U32BE	1	h
Trip Pump Running Hours	277	U32BE	1	h
Total Controller Running Hours	279	U32BE	1	h
Present Controller Running Hours	281	U32BE	1	h
Total Pump Running kWh Counter	283	U32BE	1	kWh
Trip Pump Running kWh Counter	285	U32BE	1	kWh
Control Mode	300	U16	1
HOA State	301	U16	1
Active Parameters	302	U16	1
Minimum Speed Limit	303	U16	1	RPM
Maximum Speed Limit	304	U16	1	RPM
Hand Mode Speed	305	U16	0.1
BMS Set Speed	306	U16	0.1
Start/Stop	308	U16	1
Alarms	400	U32BE	1
Warnings	402	U32BE	1
Acknowledge Warnings	404	U32BE	1
Standard Mode - Zero Flow Head	500	U32BE	0.01
Standard Mode - Design Head	502	U32BE	0.01
Standard Mode - Design Flow	504	U32BE	0.01
Standard Mode - Minimum Flow	506	U32BE	0.01
Mode 1 - Zero Flow Head	508	U32BE	0.01
Mode 1 - Design Head	510	U32BE	0.01
Mode 1 - Design Flow	512	U32BE	0.01
Mode 1 - Minimum Flow	514	U32BE	0.01
Mode 2 - Zero Flow Head	516	U32BE	0.01
Mode 2 - Design Head	518	U32BE	0.01
Mode 2 - Design Flow	520	U32BE	0.01
Mode 2 - Minimum Flow	522	U32BE	0.01
Control Setpoint	539	U32BE	0.01
Pump Name / Tag name	900	U16	1
Serial Number	908	U16	1
Firmware Version	915	U16	0.01
Hardware Version	916	U16	1
BMS Modbus Version	917	U16	1
Firmware Patch Version	918	U16	1

link settings as documented (unverified): RTU/TCP; FC 03,06; Modbus RTU or TCP/IP supported. Configurable via touchscreen or webserver.

bench facts as documented (unverified)

terminals	RS-485 Interface: (P RS-485) terminal 68, (N RS-485) terminal 69, (COM RS-485) terminal 61
A/B polarity	A = + Positive, B = - Negative, G = Ground
termination	Terminating resistor switch set to Enabled (towards the EN label for the BAS ports)
connector	3-way plug for RS485 bus
shield/ground	Recommended cable is 3-conductor AWG 20 stranded tinned copper, PVC insulated, foil shielded and with wire guide (e.g., Belden 3106A)
serial register	908
firmware register	915
power	1 x 200-240V +- 10%, 3 x 200-240V +- 10%, 3 x 380-480V +- 10%, 3 x 525-600V +- 10%, 50/60Hz
environment	Ambient temperature for standard motors must be no greater than 113°F/45°C. Standard enclosure rating is UL Type 12 / IP55.
certifications	UL Type 12 / IP55, CE compliance, UL compliance (61800-5-1), UL compliance (508c)
doc revision	File No: 101.82, Date: November 10, 2025

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

confirmed: File No: 101.82, Date: November 10, 2025 — confirmed by Armstrong Fluid Technology Design Envelope 4300 & 4380 manual [1.1.1]
confirmed: Modbus RTU or TCP/IP supported — confirmed by manual section 3.0 networking controls
confirmed: actual_speed_rpm @ 100, actual_speed_percent @ 101, motor_power @ 102, motor_input_voltage @ 104, motor_input_current @ 105, sensorless_head @ 107, sensorless_flow @ 109, total_flow @ 111, total_power @ 113, number_of_running_pumps @ 115, max_sensorless_flow @ 116, max_sensorless_head @ 118, status @ 122 — confirmed by Modbus register map
confirmed: digital_in @ 200, analog_in_1 @ 201, analog_in_2 @ 203, analog_out_1 @ 205, digital_out @ 206, relays @ 207 — confirmed by Modbus register map
confirmed: total_pump_running_hours @ 275, trip_pump_running_hours @ 277, total_controller_running_hours @ 279, present_controller_running_hours @ 281, total_pump_running_kwh @ 283, trip_pump_running_kwh @ 285 — confirmed by Modbus register map
confirmed: control_mode @ 300, hoa_state @ 301, alarms @ 400, warnings @ 402 — confirmed by Modbus register map
confirmed: firmware_register @ 915, serial_register @ 908 — confirmed by Modbus register map

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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