Felicity BMS – Modbus Registermap

Some rough estimates what the registers might be.

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🔋 Battery Info Block

Start: 0x1300 (= 4864)
Länge: 42 Register

📤 Request

01 03 13 00 00 2A C0 91

01 Slave‑ID, 03 Function Code, 13 00 Startadresse, 00 2A Anzahl Register, C0 91 CRC‑16

Dec	Hex	Beschreibung	Skalierung	Verified
4864	1300	Unbekannt	-
4865	1301	Unbekannt	-
4866	1302	Unbekannt	-
4867	1303	-	-
4868	1304	-	-
4869	1305	-	-
4870	1306	Batteriespannung	×0.01 V	OK
4871	1307	Batteriestrom (signed)	×0.1 A	OK
4872	1308	-	-
4873	1309	-	-
4874	1310	Batterietemperatur	°C
4875	1311	SOC	%	OK
4876	1312	SOH	%
4877	1313	Zyklen	-	OK
4878–4893	1314–1323	Diverse interne Werte	-
4894	1324	Unbekannt	-
4895	1325	Unbekannt	-
4896	1326	Max Cell Voltage (raw)	×0.001 V	OK
4897	1327	Max Cell Index	-
4898	1328	Min Cell Voltage (raw)	×0.001 V	OK
4899	1329	Min Cell Index	-
4900	132A	Cell Count	-
4901	132B	-	-
4902	132C	NTC Count	-
4903	132D	-	-
4904	132E	Temp (min/avg/max)	°C
4905	132F	Temp (min/avg/max)	°C

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🔋 Cell Info Block

Start: 0x132A (= 4906)
Länge: 32 Register

📤 Request

01 03 13 2A 00 20 61 5E

Dec	Hex	Beschreibung	Skalierung	Verified
4906	132A	Max Cell Voltage (raw)	×0.001 V
4907	132B	Max Cell Index	-
4908	132C	Min Cell Voltage (raw)	×0.001 V
4909	132D	Min Cell Index	-
4910	132E	Temp Sensor 1	°C	OK
4911	132F	Temp Sensor 2	°C	OK
4912	1330	Temp Sensor 3	°C	OK
4913	1331	Temp Sensor 4	°C	OK

Zellspannungen (×0.001 V)

Dec	Hex	Cell	Verified
4914	1332	Cell 1	OK
4915	1333	Cell 2	OK
4916	1334	Cell 3	OK
4917	1335	Cell 4	OK
4918	1336	Cell 5	OK
4919	1337	Cell 6	OK
4920	1338	Cell 7	OK
4921	1339	Cell 8	OK
4922	133A	Cell 9	OK
4923	133B	Cell 10	OK
4924	133C	Cell 11	OK
4925	133D	Cell 12	OK
4926	133E	Cell 13	OK
4927	133F	Cell 14	OK
4928	1340	Cell 15	OK
4929	1341	Cell 16	OK

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⚙️ Status / Limits Block

Start: 0x2320 (= 8992)
Länge: 64 Register

📤 Request

01 03 23 20 00 40 4E 74

01 Slave‑ID, 03 Read Holding Registers, 23 20 Startadresse, 00 40 Anzahl Register, 4E 74 CRC‑16

Dec	Hex	Beschreibung	Skalierung	Verified
8992	2320	Status	-
8993	2321	-	-
8994	2322	Charge Limit (A×10)	×0.1 A
8995	2323	NTC Count	-
8996	2324	Min Cell Voltage (raw)	×0.001 V
8997	2325	Cell High Alarm	×0.001 V
8998	2326	Cell High Alarm Back	×0.001 V
8999	2327	-	-
9000	2328	-	-
9001	2329	Max Cell Voltage (Soll)	×0.001 V	OK
9002	232A	95% SoC Voltage	×0.001 V	OK
9003	232B	5% SoC Voltage	×0.001 V	OK
9004	232C	Empty Voltage	×0.001 V	OK
9005	232D	Cell High Alarm	×0.001 V	OK
9006	232E	Temp High Alarm	°C?
9007	232F	Temperatur	°C
9008–9023	2330–233F	Diverse interne Werte	-

⚡ Stromlimits

Dec	Hex	Beschreibung	Skalierung
9032	2370	Charge Limit	×0.1 A
9033	2371	Charge Limit Back	×0.1 A
9034	2372	Discharge Limit	×0.1 A

⚠️ Fehlerflags / Statusbits

Registerbereich: 9035–9055 (0x2373–0x238F)

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