Crowcon Vortex gas controller

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 Type	0	U16	1
Accept / Reset	8	U16	1
System Status	11	U16	1
Power Status	12	U16	1
System Fault Inhibit	15	U16	1
System Sounder Inhibit	16	U16	1
Serial Number	32	U16	1
System Name	33	U16	1
Number of installed Detector Inputs	38	U16	1
Number of installed Digital Outputs	39	U16	1
Detector 1 Enable	109	U16	1
Detector 1 Type	110	U16	1
Detector 1 Alarm 1 Level	113	I16	1
Detector 1 Alarm 1 Transition	114	U16	1
Detector 1 Alarm 2 Level	115	I16	1
Detector 1 Alarm 2 Transition	116	U16	1
Detector 1 Alarm 3 Level	117	I16	1
Detector 1 Alarm 3 Transition	118	U16	1
Detector 1 Units	121	U16	1
Detector 1 Range	122	U16	1
Detector 1 Identity	125	U16	1
Detector 2 Enable	129	U16	1
Detector 2 Type	130	U16	1
Detector 2 Alarm 1 Level	133	I16	1
Detector 2 Alarm 1 Transition	134	U16	1
Detector 2 Alarm 2 Level	135	I16	1
Detector 2 Alarm 2 Transition	136	U16	1
Detector 2 Alarm 3 Level	137	I16	1
Detector 2 Alarm 3 Transition	138	U16	1
Detector 2 Units	141	U16	1
Detector 2 Range	142	U16	1
Detector 2 Identity	145	U16	1
Detector 3 Enable	149	U16	1
Detector 3 Type	150	U16	1
Detector 3 Alarm 1 Level	153	I16	1
Detector 3 Alarm 1 Transition	154	U16	1
Detector 3 Alarm 2 Level	155	I16	1
Detector 3 Alarm 2 Transition	156	U16	1
Detector 3 Alarm 3 Level	157	I16	1
Detector 3 Alarm 3 Transition	158	U16	1
Detector 3 Units	161	U16	1
Detector 3 Range	162	U16	1
Detector 3 Identity	165	U16	1
Detector 4 Enable	169	U16	1
Detector 4 Type	170	U16	1
Detector 4 Alarm 1 Level	173	I16	1
Detector 4 Alarm 1 Transition	174	U16	1
Detector 4 Alarm 2 Level	175	I16	1
Detector 4 Alarm 2 Transition	176	U16	1
Detector 4 Alarm 3 Level	177	I16	1
Detector 4 Alarm 3 Transition	178	U16	1
Detector 4 Units	181	U16	1
Detector 4 Range	182	U16	1
Detector 4 Identity	185	U16	1
Detector 5 Enable	189	U16	1
Detector 5 Type	190	U16	1
Detector 5 Alarm 1 Level	193	I16	1
Detector 5 Alarm 1 Transition	194	U16	1
Detector 5 Alarm 2 Level	195	I16	1
Detector 5 Alarm 2 Transition	196	U16	1
Detector 5 Alarm 3 Level	197	I16	1
Detector 5 Alarm 3 Transition	198	U16	1
Detector 5 Units	201	U16	1
Detector 5 Range	202	U16	1
Detector 5 Identity	205	U16	1
Detector 6 Enable	209	U16	1
Detector 6 Type	210	U16	1
Detector 6 Alarm 1 Level	213	I16	1
Detector 6 Alarm 1 Transition	214	U16	1
Detector 6 Alarm 2 Level	215	I16	1
Detector 6 Alarm 2 Transition	216	U16	1
Detector 6 Alarm 3 Level	217	I16	1
Detector 6 Alarm 3 Transition	218	U16	1
Detector 6 Units	221	U16	1
Detector 6 Range	222	U16	1
Detector 6 Identity	225	U16	1
Detector 7 Enable	229	U16	1
Detector 7 Type	230	U16	1
Detector 7 Alarm 1 Level	233	I16	1
Detector 7 Alarm 1 Transition	234	U16	1
Detector 7 Alarm 2 Level	235	I16	1
Detector 7 Alarm 2 Transition	236	U16	1
Detector 7 Alarm 3 Level	237	I16	1
Detector 7 Alarm 3 Transition	238	U16	1
Detector 7 Units	241	U16	1
Detector 7 Range	242	U16	1
Detector 7 Identity	245	U16	1
Detector 8 Enable	249	U16	1
Detector 8 Type	250	U16	1
Detector 8 Alarm 1 Level	253	I16	1
Detector 8 Alarm 1 Transition	254	U16	1
Detector 8 Alarm 2 Level	255	I16	1
Detector 8 Alarm 2 Transition	256	U16	1
Detector 8 Alarm 3 Level	257	I16	1
Detector 8 Alarm 3 Transition	258	U16	1
Detector 8 Units	261	U16	1
Detector 8 Range	262	U16	1
Detector 8 Identity	265	U16	1
Detector 9 Enable	269	U16	1
Detector 9 Type	270	U16	1
Detector 9 Alarm 1 Level	273	I16	1
Detector 9 Alarm 1 Transition	274	U16	1
Detector 9 Alarm 2 Level	275	I16	1
Detector 9 Alarm 2 Transition	276	U16	1
Detector 9 Alarm 3 Level	277	I16	1
Detector 9 Alarm 3 Transition	278	U16	1
Detector 9 Units	281	U16	1
Detector 9 Range	282	U16	1
Detector 9 Identity	285	U16	1
Detector 10 Enable	289	U16	1
Detector 10 Type	290	U16	1
Detector 10 Alarm 1 Level	293	I16	1
Detector 10 Alarm 1 Transition	294	U16	1
Detector 10 Alarm 2 Level	295	I16	1
Detector 10 Alarm 2 Transition	296	U16	1
Detector 10 Alarm 3 Level	297	I16	1
Detector 10 Alarm 3 Transition	298	U16	1
Detector 10 Units	301	U16	1
Detector 10 Range	302	U16	1
Detector 10 Identity	305	U16	1
Detector 11 Enable	309	U16	1
Detector 11 Type	310	U16	1
Detector 11 Alarm 1 Level	313	I16	1
Detector 11 Alarm 1 Transition	314	U16	1
Detector 11 Alarm 2 Level	315	I16	1
Detector 11 Alarm 2 Transition	316	U16	1
Detector 11 Alarm 3 Level	317	I16	1
Detector 11 Alarm 3 Transition	318	U16	1
Detector 11 Units	321	U16	1
Detector 11 Range	322	U16	1
Detector 11 Identity	325	U16	1
Detector 12 Enable	329	U16	1
Detector 12 Type	330	U16	1
Detector 12 Alarm 1 Level	333	I16	1
Detector 12 Alarm 1 Transition	334	U16	1
Detector 12 Alarm 2 Level	335	I16	1
Detector 12 Alarm 2 Transition	336	U16	1
Detector 12 Alarm 3 Level	337	I16	1
Detector 12 Alarm 3 Transition	338	U16	1
Detector 12 Units	341	U16	1
Detector 12 Range	342	U16	1
Detector 12 Identity	345	U16	1
Detector 1 Level	2999	I16	1
Detector 1 Status	3000	U16	1
Detector 1 Inhibit	3003	U16	1
Detector 2 Level	3009	I16	1
Detector 2 Status	3010	U16	1
Detector 2 Inhibit	3013	U16	1
Detector 3 Level	3019	I16	1
Detector 3 Status	3020	U16	1
Detector 3 Inhibit	3023	U16	1
Detector 4 Level	3029	I16	1
Detector 4 Status	3030	U16	1
Detector 4 Inhibit	3033	U16	1
Detector 5 Level	3039	I16	1
Detector 5 Status	3040	U16	1
Detector 5 Inhibit	3043	U16	1
Detector 6 Level	3049	I16	1
Detector 6 Status	3050	U16	1
Detector 6 Inhibit	3053	U16	1
Detector 7 Level	3059	I16	1
Detector 7 Status	3060	U16	1
Detector 7 Inhibit	3063	U16	1
Detector 8 Level	3069	I16	1
Detector 8 Status	3070	U16	1
Detector 8 Inhibit	3073	U16	1
Detector 9 Level	3079	I16	1
Detector 9 Status	3080	U16	1
Detector 9 Inhibit	3083	U16	1
Detector 10 Level	3089	I16	1
Detector 10 Status	3090	U16	1
Detector 10 Inhibit	3093	U16	1
Detector 11 Level	3099	I16	1
Detector 11 Status	3100	U16	1
Detector 11 Inhibit	3103	U16	1
Detector 12 Level	3109	I16	1
Detector 12 Status	3110	U16	1
Detector 12 Inhibit	3113	U16	1

link settings as documented (unverified): RTU; default 9600 8N2; FC 03,16; Binary RTU format. 1 start bit, 8 data bits, 2 stop bits, no parity.

bench facts as documented (unverified)

terminals	2 wire
wiring notes	half duplex RS485 link or RS232 hardware interfaces
max registers/read	100
response timeout	400 ms
protocol notes	Turnaround time is 50 to 400 mS.
model register	0
serial register	32
identification notes	Unit Type at register 1 (address 0), Serial Number at register 33 (address 32)
doc revision	2
firmware applicability	GCNCT1_1i1

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

confirmed: comms defaults (9600 baud, RTU, 1 start bit, 8 data bits, 2 stop bits, no parity) — confirmed by Crowcon Vortex OEM MODBUS Specification [4.2.1]
confirmed: firmware applicability (GCNCT1_1i1) — confirmed by Crowcon Vortex OEM MODBUS Specification change history
confirmed: register map (system_status @ 11, power_status @ 12, detector levels starting at 2999/3000) — confirmed by Crowcon Vortex OEM MODBUS Specification
confirmed: turnaround time (50 to 400 mS) — confirmed by Crowcon Vortex OEM MODBUS Specification

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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