Estun ProNet AC servo 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
Binary	0	U16	1
Binary	1	U16	1
Binary	2	U16	1
Binary	3	U16	1
Hex	4	U16	1
Hex	5	U16	1
Hex	6	U16	1
Binary	7	U16	1
Online autotuning setting	100	U16	1
Machine rigidity setting	101	U16	1
Speed loop gain	102	U16	1	Hz
Speed loop integral time constant	103	U16	0.1	ms
Position loop gain	104	U16	1	1/s
Torque reference filter time constant	105	U16	0.1	ms
Load inertia percentage	106	U16	1
2nd speed loop gain	107	U16	1	Hz
2nd speed loop integral time constant	108	U16	0.1	ms
2nd position loop gain	109	U16	1	Hz
2nd torque reference filter time constant	110	U16	0.1	ms
Speed bias	111	U16	1	rpm
Feedforward	112	U16	1	%
Feedforward filter	113	U16	0.1	ms
Torque feedforward	114	U16	1	%
Torque feedforward filter	115	U16	0.1	ms
P/PI switching condition	116	U16	1
Torque switching threshold	117	U16	1	%
Offset counter switching threshold	118	U16	1	reference pulse
Setting acceleration speed switching threshold	119	U16	10	rpm/s
Setting speed switching threshold	120	U16	1	rpm
Gain switching condition	121	U16	1
Switching delay time	122	U16	0.1	ms
Threshold switching level	123	U16	1
Reserved	124	U16	1
Position gain switching time	125	U16	0.1	ms
Hysteresis switching	126	U16	1
Low speed detection filter	127	U16	0.1	ms
Speed gain acceleration relationship during online autotunin	128	U16	1
Low speed correction coefficient	129	U16	1
Friction load	130	U16	0.1	%
Friction compensation speed hysteresis area	131	U16	1	rpm
Sticking friction load	132	U16	0.1	%/1000rpm
Reserved	133	U16	1
Reserved	134	U16	1
Reserved	135	U16	1
Reserved	136	U16	1
Reserved	137	U16	1
Reserved	138	U16	1
Reserved	139	U16	1
Reserved	140	U16	1
Reserved	141	U16	1
Reserved	142	U16	1
Reserved	143	U16	1
Reserved	144	U16	1
PG divided ratio	200	U16	1	Puls
1st electronic gear numerator	201	U16	1
Electronic gear denominator	202	U16	1
2nd electronic gear numerator	203	U16	1
Position reference Acceleration/deceleration time constant	204	U16	0.1	ms
Position reference filter form selection	205	U16	1
Speed reference input gain	300	U16	1	rpm/v
Analog speed given zero bias	301	U16	10	mv
Reserved	302	U16	1
Reserved	303	U16	1
Parameter speed	304	I16	1	rpm
JOG speed	305	U16	1	rpm
Soft start acceleration time	306	U16	1	ms
Soft start deceleration time	307	U16	1	ms
Speed filter time constant	308	U16	1	ms
S curve risetime	309	U16	1	ms
Speed reference curve form	310	U16	1
S form selection	311	U16	1
DP communication JOG speed	312	I16	1	rpm
Reserved	313	U16	1
Reserved	314	U16	1
Reserved	315	U16	1
Internal speed 1	316	I16	1	rpm
Internal speed 2	317	I16	1	rpm
Internal speed 3	318	I16	1	rpm
Internal speed 4	319	I16	1	rpm
Internal speed 5	320	I16	1	rpm
Internal speed 6	321	I16	1	rpm
Internal speed 7	322	I16	1	rpm
Torque reference gain	400	U16	0.1	V/100%
Forward torque internal limit	401	U16	1	%
Reverse torque internal limit	402	U16	1	%
Forward external torque limit	403	U16	1	%
Reverse external torque limit	404	U16	1	%
Plug braking torque limit	405	U16	1	%
Speed limit during torque control	406	U16	1	rpm
Notch filter 1 frequency	407	U16	1	Hz
Notch filter 1 depth	408	U16	1
Notch filter 2 frequency	409	U16	1	Hz
Notch filter 2 depth	410	U16	1
Low frequency jitter frequency	411	U16	0.1	Hz
Low frequency jitter damp	412	U16	1
Torque control delay time	413	U16	0.1	ms
Torque control speed hysteresis	414	U16	1	rpm
Analog torque given zero bias	415	I16	10	mv
Positioning error	500	U16	1	Puls
Coincidence difference	501	U16	1	rpm
Zero clamp speed	502	U16	1	rpm
Rotation detection speed TGON	503	U16	1	rpm
Offset counter overflow alarm	504	U16	256	Puls
Servo ON waiting time	505	I16	1	ms
Basic waiting flow	506	U16	10	ms
Brake waiting speed	507	U16	1	rpm
Brake waiting time	508	U16	10	ms
Allocate input signal to terminal	509	U16	1
Allocate input signal to terminal	510	U16	1
Allocate output signal to terminal	511	U16	1
Bus control input node low-bit enable	512	U16	1
Bus control input node low-bit enable	513	U16	1
Input port filter	514	U16	0.2	ms
Alarm port filter	515	U16	0.2	ms
Input port signal inversion	516	U16	1
Input port signal inversion	517	U16	1
Dynamic brake time	518	U16	0.5	ms
Serial encoder error time	519	U16	0.1	ms
Position complete time	520	U16	0.1	ms
Reserved	521	U16	1
Reserved	522	U16	1
Reserved	523	U16	1
Reserved	524	U16	1
Overload alarm threshold	525	U16	1	%
Temperature threshold of motor overheat alarm	526	U16	1	°C
Position pulse in point to point control	600	I16	10000	P
Position pulse in point to point control	601	I16	1	P
Position pulse in point to point control	630	I16	1	P
Position pulse in point to point control	631	I16	1	P
Point to point speed control	632	U16	1	rpm
Point to point speed control	647	U16	1	rpm
Point to point 1st order filter	648	U16	0.1	ms
Point to point 1st order filter	663	U16	0.1	ms
Stop time	664	U16	50	ms
Stop time	679	U16	50	ms
Reserved	680	U16	1
Hex	681	U16	1
Programme mode	682	U16	1
Programme start step	683	U16	1
Programme stop step	684	U16	1
Search travel speed in position control(contact reference)	685	U16	1	rpm
Leave travel switch speed in position control(contact refere	686	U16	1	rpm
Position teaching pulse	687	I16	10000	P
Position teaching pulse	688	I16	1	P
Homing Mode Setting	689	U16	1
Number of error pulses during homing	690	U16	10000	pulse
Number of error pulses during homing	691	U16	1	pulse
Hex	700	U16	1
MODBUS axis address	701	U16	1
Reserved	702	U16	1
CAN communication speed	703	U16	1
CAN communication contact	704	U16	1
Hex	840	U16	1
Alarm information memory area	2033	U16	1
Speed reference zero offset	2043	U16	1
Torque reference zero offset	2044	U16	1
Iu zero offset	2045	U16	1
Iv zero offset	2046	U16	1
Speed feedback	2054	I16	1	rpm
Input speed reference value	2055	I16	1	rpm
Input torque reference percentage	2056	I16	1	%
Internal torque reference percentage	2057	I16	1	%
Number of encoder rotation pulses	2058	U16	1
Input signal state	2059	U16	1
Encoder signal state	2060	U16	1
Output signal state	2061	U16	1
Pulse settign	2062	U16	1
Low bits of present location	2063	U16	1	1 reference pulse
High bits of present location	2064	I16	1	10000 reference pulses
Error pulse counter low 16 bits	2065	U16	1
Error pulse counter high 16 bits	2066	I16	1
Setting pulse counter low bits	2067	U16	1	1 reference pulse
Setting pulse counter high bits	2068	I16	1	10000 reference pulses
Load inertia percentage	2069	U16	1	%
Servomotor overloading proportion	2070	U16	1	%
Current alarm	2071	U16	1
Servomotor winding temperature	2072	I16	1	°C
MODBUS communication IO signal	2304	U16	1
DSP version	2318	U16	1
CPLD version	2319	U16	1
17-bit encoder multi-turn information	4112	U16	1	revolution
17-bit encoder single-turn information	4113	U16	1	pulse
17-bit encoder single-turn information high bits	4114	U16	1
Clear historical alarms	4129	U16	1
Clear current alarms	4130	U16	1
JOG servo enabled	4131	U16	1
JOG forward rotation	4132	U16	1
JOG reverse rotation	4133	U16	1
JOG forward rotation at node position	4134	U16	1
JOG reverse rotation at node position	4135	U16	1
Pause at node position	4136	U16	1
Clear encoder alarm	4160	U16	1
Clear encoder multi-turn data	4161	U16	1

link settings as documented (unverified): RTU/ASCII; default 9600 8O1; unit ID 1; Maximum of 31 servo drives can be connected. Terminating resistance of 120 ohms is used at both ends of the 485 network. If transmission speed is above 9600bps, please use the communication cable within 15 meters.

bench facts as documented (unverified)

terminals	CN3, CN4
termination	120 ohm terminating resistance
isolation	Isolated ground (ISO_GND)
shield/ground	Connect shield to connector shell
wiring notes	CN3 is used as communication cable input terminal and CN4 is used as communication cable output terminal.
max registers/read	12
protocol notes	Data content n-word=2n-byte, n <= 12
power	Single-phase 200~230VAC, Three-phase 200~230VAC, Three-phase 380~480VAC, Three-phase 380~440VAC (+10% -15%, 50/60Hz)
environment	Temperature: -20~55°C, Humidity: 5%~95%RH, Vibration: 4.9m/s^2 or less, Condensation and Freezing: None
certifications	CE
doc revision	V2.02

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

confirmed: comms.baud_rates [4800, 9600, 19200] and default_baud 9600 — confirmed by Estun ProNet Series User Manual parameter Pn700.0
confirmed: comms.parity 'O' (Odd) and stop_bits 1 — confirmed by Estun ProNet Series User Manual parameter Pn700.1 default setting 5 (8, O, 1)
confirmed: comms.default_unit_id 1 — confirmed by Estun ProNet Series User Manual parameter Pn701 default setting
confirmed: quirks.max_read_registers 12 — confirmed by Estun ProNet Series User Manual stating 'n-word=2n-byte, n <= 12'
confirmed: physical.terminals CN3, CN4 and isolation ISO_GND — confirmed by Estun ProNet Series User Manual CN3/CN4 pinout definitions
confirmed: power specifications — confirmed by Estun ProNet Series User Manual voltage ranges for 200V and 400V drive units
confirmed: register map addresses (0806h-0818h / 2054-2072) — confirmed by Estun ProNet Series User Manual Servo state data communication address table

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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