ICP DAS M-7002 I/O module

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
analog_input_ch0	0	I16	0.001
analog_input_ch1	1	I16	0.001
analog_input_ch2	2	I16	0.001
analog_input_ch3	3	I16	0.001
digital_input_counter_ch0	96	U16	1
digital_input_counter_ch1	97	U16	1
digital_input_counter_ch2	98	U16	1
digital_input_counter_ch3	99	U16	1
digital_input_counter_ch4	100	U16	1
high_alarm_value_ch0	224	I16	0.001
high_alarm_value_ch1	225	I16	0.001
high_alarm_value_ch2	226	I16	0.001
high_alarm_value_ch3	227	I16	0.001
low_alarm_value_ch0	232	I16	0.001
low_alarm_value_ch1	233	I16	0.001
low_alarm_value_ch2	234	I16	0.001
low_alarm_value_ch3	235	I16	0.001

link settings as documented (unverified): RTU; baud 1200/2400/4800/9600/19200/38400/57600/115200; FC 02,04,05,70

⚠ Warning: It is not recommended that calibration be performed until the process is fully understood. — Starkest reads only; we never write a control register.

bench facts as documented (unverified)

A/B polarity	Reverse Polarity Protection: Yes
isolation	Intra-Module Isolation, Field-to-Logic: 2500 VDC, DI Isolation Voltage: 3750 VDC
protocol notes	If a CRC mismatch occurs, the module will not respond.
model register	40483-40484
firmware register	40481-40482
power	Input Voltage Range: 10 ~ 30 VDC, Consumption: 1.8 W
environment	Operating Temperature: -25 ~ +75°C, Storage Temperature: -40 ~ +85°C, Humidity: 10 ~ 95% RH, Non-condensing
accuracy	Analog Input Accuracy: Normal Mode 0.1%, Fast Mode 0.5%
certifications	EMS Protection: ESD (IEC 61000-4-2) +/-4 kV, EFT (IEC 61000-4-4) +/-4 kV, Surge (IEC 61000-4-5) +/-3 kV
doc revision	1.1

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

confirmed: Baud rates [1200, 2400, 4800, 9600, 19200, 38400, 57600, 115200] and framing RTU — confirmed by M-7002 User Manual Section 1.8
confirmed: Modbus function codes 2, 4, 5, 70 — confirmed by M-7002 User Manual Chapter 3
confirmed: Analog Input Accuracy: Normal Mode 0.1%, Fast Mode 0.5% — confirmed by M-7002 Datasheet
confirmed: EMS Protection: ESD +/-4 kV, EFT +/-4 kV, Surge +/-3 kV — confirmed by M-7002 Datasheet
confirmed: Calibration warning — confirmed by M-7002 User Manual Section 1.6
confirmed: Operating Temperature: -25 ~ +75°C, Storage Temperature: -40 ~ +85°C, Humidity: 10 ~ 95% RH — confirmed by M-7002 Datasheet
confirmed: Firmware register 40481-40482 and model register 40483-40484 — confirmed by M-7002 User Manual Modbus Address Mapping
confirmed: Intra-Module Isolation: 2500 VDC, DI Isolation Voltage: 3750 VDC — confirmed by M-7002 Datasheet

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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