Kostenlose Modbus-Vorlage SunSpec Model 6 — Secure Write Sequential Request

Name: SunSpec Model 6 — Secure Write Sequential Request
Brand: SunSpec
SKU: 2543bb26-82a3-41ff-a082-2cb7f301c652

SunSpec Model 6 ist ein Sicherheitsmodell auf Protokollebene, definiert von der SunSpec Alliance, fur authentifizierte Registerschreibzugriffe uber Modbus TCP. Das Modell implementiert das Secure Write Sequential Request-Muster: Ein Client ladt bis zu 80 Datenwörter (val1 bis val80) in einen Puffer, setzt Zielmodellindex und Registeroffset uber die Register x und off und übergibt die Anfrage mit Zeitstempel (ts, ms), Sequenznummer (seq), Clientrolle (role), Signaturalgorithmus (alg) und Wortanzahl (n). Die Header-Register id und l identifizieren und dimensionieren den Block. Diese Modbus-Vorlage ermöglicht es dem ModbusCloud Gateway, den vollstandigen Schreibanfragestatus zu überwachen, was fur die Auditierung von Steuerbefehlen an DER-Gerate hilfreich ist.

Zu beachten

Das id-Register liefert nicht den Wert 6. Was ist falsch?

Der Basisadress-Offset ist wahrscheinlich nicht korrekt. SunSpec-Geratkarten können bei Adresse 0, 40000 oder 50000 beginnen. Prufen Sie, welche Basisadresse das Gerat verwendet, und passen Sie den Template-Offset im Portal entsprechend an. Bestatigen Sie ausserdem, ob die Geratefirmware Model 6 unterstutzt, da altere Firmwareversionen manchmal nur die Modelle 1 und 101 bereitstellen.

Alle val-Register liefern null, auch nach einem Schreibereignis. Warum?

Der Staged-Write-Puffer wird nur wahrend einer aktiven Schreibtransaktion befullt. Zwischen Transaktionen kann das Gerat alle val-Register auf null oder den Not-Implemented-Wert (0xFFFF fur uint16) zurucksetzen. Dieses Verhalten ist spezifikationskonform. Pollen Sie das seq-Register, um eine neue Transaktion zu erkennen, und lesen Sie die Nutzlast dann im selben Scanzyklus aus.

Das Gateway verbindet sich, aber das seq-Register wird nie erhoht. Was nun?

Es gibt keinen aktiven Secure-Write-Client, der Anfragen an das Gerat sendet. Prufen Sie, ob die Steuerungsanwendung Model 6 aktiviert hat und Schreibanfragen versendet. Prufen Sie ausserdem, ob die im Portal eingestellte Unit-ID mit der konfigurierten Modbus-Unit-ID des Gerats ubereinstimmt, da eine Abweichung dazu fuhrt, dass Lesezugriffe gelingen, aber veraltete oder Nullwerte zuruckgeliefert werden.

Ist es sicher, von Ihrem Portal aus in val-, off- oder x-Register zu schreiben?

Gehen Sie dabei ausserst vorsichtig vor. Das Schreiben in RW-Register von Model 6, einschliesslich val1 bis val80, off, x, seq, role, alg oder n, entspricht dem Einreichen oder Verandern einer signierten Schreibanfrage an das Zielgerat. Eine fehlerhafte Nutzlast oder ein falscher Offset kann einen unzulassigen Sollwert an einen aktiven Wechselrichter oder Batteriespeicher senden, was Schutzfunktionen auslösen oder die Gerantegewährleistung beeintrachtigen kann. Schreiben Sie ausschliesslich wahrend einer kontrollierten Inbetriebnahme oder eines Testverfahrens uber das Portal.

90 lesen / 88 schreiben

Name	Adresse	Funktion	Typ	Zugriff
id SunSpec model identifier, fixed value 6 for this model.	0	FC03	uint16	R
l Model block length in 16-bit registers.	1	FC03	uint16	R
x Index of the target model instance to write to.	2	FC03	uint16	R/W
off Register offset within the target model for the write payload.	3	FC03	uint16	R/W
val1 Payload word 1, first staged value for the secure write.	4	FC03	uint16	R/W
val2 Payload word 2, second staged value for the secure write.	5	FC03	uint16	R/W
val3 Payload word 3, third staged value for the secure write.	6	FC03	uint16	R/W
val4 Payload word 4, fourth staged value for the secure write.	7	FC03	uint16	R/W
val5 Payload word 5, fifth staged value for the secure write.	8	FC03	uint16	R/W
val6 Payload word 6, sixth staged value for the secure write.	9	FC03	uint16	R/W
val7 Payload word 7, seventh staged value for the secure write.	10	FC03	uint16	R/W
val8 Payload word 8, eighth staged value for the secure write.	11	FC03	uint16	R/W
val9 Payload word 9, ninth staged value for the secure write.	12	FC03	uint16	R/W
val10 Payload word 10, tenth staged value for the secure write.	13	FC03	uint16	R/W
val11 Payload word 11, eleventh staged value for the secure write.	14	FC03	uint16	R/W
val12 Payload word 12, twelfth staged value for the secure write.	15	FC03	uint16	R/W
val13 Payload word 13, thirteenth staged value for the secure write.	16	FC03	uint16	R/W
val14 Payload word 14, fourteenth staged value for the secure write.	17	FC03	uint16	R/W
val15 Payload word 15, fifteenth staged value for the secure write.	18	FC03	uint16	R/W
val16 Payload word 16, sixteenth staged value for the secure write.	19	FC03	uint16	R/W
val17 Payload word 17, seventeenth staged value for the secure write.	20	FC03	uint16	R/W
val18 Payload word 18, eighteenth staged value for the secure write.	21	FC03	uint16	R/W
val19 Payload word 19, nineteenth staged value for the secure write.	22	FC03	uint16	R/W
val20 Payload word 20, twentieth staged value for the secure write.	23	FC03	uint16	R/W
val21 Payload word 21 of the staged write buffer.	24	FC03	uint16	R/W
val22 Payload word 22 of the staged write buffer.	25	FC03	uint16	R/W
val23 Payload word 23 of the staged write buffer.	26	FC03	uint16	R/W
val24 Payload word 24 of the staged write buffer.	27	FC03	uint16	R/W
val25 Payload word 25 of the staged write buffer.	28	FC03	uint16	R/W
val26 Payload word 26 of the staged write buffer.	29	FC03	uint16	R/W
val27 Payload word 27 of the staged write buffer.	30	FC03	uint16	R/W
val28 Payload word 28 of the staged write buffer.	31	FC03	uint16	R/W
val29 Payload word 29 of the staged write buffer.	32	FC03	uint16	R/W
val30 Payload word 30 of the staged write buffer.	33	FC03	uint16	R/W
val31 Payload word 31 of the staged write buffer.	34	FC03	uint16	R/W
val32 Payload word 32 of the staged write buffer.	35	FC03	uint16	R/W
val33 Payload word 33 of the staged write buffer.	36	FC03	uint16	R/W
val34 Payload word 34 of the staged write buffer.	37	FC03	uint16	R/W
val35 Payload word 35 of the staged write buffer.	38	FC03	uint16	R/W
val36 Payload word 36 of the staged write buffer.	39	FC03	uint16	R/W
val37 Payload word 37 of the staged write buffer.	40	FC03	uint16	R/W
val38 Payload word 38 of the staged write buffer.	41	FC03	uint16	R/W
val39 Payload word 39 of the staged write buffer.	42	FC03	uint16	R/W
val40 Payload word 40 of the staged write buffer.	43	FC03	uint16	R/W
val41 Payload word 41 of the staged write buffer.	44	FC03	uint16	R/W
val42 Payload word 42 of the staged write buffer.	45	FC03	uint16	R/W
val43 Payload word 43 of the staged write buffer.	46	FC03	uint16	R/W
val44 Payload word 44 of the staged write buffer.	47	FC03	uint16	R/W
val45 Payload word 45 of the staged write buffer.	48	FC03	uint16	R/W
val46 Payload word 46 of the staged write buffer.	49	FC03	uint16	R/W
val47 Payload word 47 of the staged write buffer.	50	FC03	uint16	R/W
val48 Payload word 48 of the staged write buffer.	51	FC03	uint16	R/W
val49 Payload word 49 of the staged write buffer.	52	FC03	uint16	R/W
val50 Payload word 50 of the staged write buffer.	53	FC03	uint16	R/W
val51 Payload word 51 of the staged write buffer.	54	FC03	uint16	R/W
val52 Payload word 52 of the staged write buffer.	55	FC03	uint16	R/W
val53 Payload word 53 of the staged write buffer.	56	FC03	uint16	R/W
val54 Payload word 54 of the staged write buffer.	57	FC03	uint16	R/W
val55 Payload word 55 of the staged write buffer.	58	FC03	uint16	R/W
val56 Payload word 56 of the staged write buffer.	59	FC03	uint16	R/W
val57 Payload word 57 of the staged write buffer.	60	FC03	uint16	R/W
val58 Payload word 58 of the staged write buffer.	61	FC03	uint16	R/W
val59 Payload word 59 of the staged write buffer.	62	FC03	uint16	R/W
val60 Payload word 60 of the staged write buffer.	63	FC03	uint16	R/W
val61 Payload word 61 of the staged write buffer.	64	FC03	uint16	R/W
val62 Payload word 62 of the staged write buffer.	65	FC03	uint16	R/W
val63 Payload word 63 of the staged write buffer.	66	FC03	uint16	R/W
val64 Payload word 64 of the staged write buffer.	67	FC03	uint16	R/W
val65 Payload word 65 of the staged write buffer.	68	FC03	uint16	R/W
val66 Payload word 66 of the staged write buffer.	69	FC03	uint16	R/W
val67 Payload word 67 of the staged write buffer.	70	FC03	uint16	R/W
val68 Payload word 68 of the staged write buffer.	71	FC03	uint16	R/W
val69 Payload word 69 of the staged write buffer.	72	FC03	uint16	R/W
val70 Payload word 70 of the staged write buffer.	73	FC03	uint16	R/W
val71 Payload word 71 of the staged write buffer.	74	FC03	uint16	R/W
val72 Payload word 72 of the staged write buffer.	75	FC03	uint16	R/W
val73 Payload word 73 of the staged write buffer.	76	FC03	uint16	R/W
val74 Payload word 74 of the staged write buffer.	77	FC03	uint16	R/W
val75 Payload word 75 of the staged write buffer.	78	FC03	uint16	R/W
val76 Payload word 76 of the staged write buffer.	79	FC03	uint16	R/W
val77 Payload word 77 of the staged write buffer.	80	FC03	uint16	R/W
val78 Payload word 78 of the staged write buffer.	81	FC03	uint16	R/W
val79 Payload word 79 of the staged write buffer.	82	FC03	uint16	R/W
val80 Payload word 80, last word of the staged write buffer.	83	FC03	uint16	R/W
ts Unix timestamp (32-bit) of the write request, seconds since epoch.	84	FC03	uint32	R/W
ms Millisecond component of the write request timestamp.	86	FC03	uint16	R/W
seq Sequence counter incremented with each new secure write request.	87	FC03	uint16	R/W
role Role identifier of the client submitting this write request.	88	FC03	uint16	R/W
alg Algorithm identifier used to compute the write request signature.	90	FC03	uint16	R/W
n Number of valid payload words present in this write request.	91	FC03	uint16	R/W