Topics created by sarah_jenkins

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sarah_jenkins

@sarah_jenkins

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My Discussions & Topics

Manage, track, and update the status of your technical questions and engineering discussions.

14 Topics New Topic

Dual Single Action Schedule (Class 22) vs Unified Schedule Table (Class 10): Practical Workaround or OBIS Misuse?

General Discussion 4 replies 38 views 2026-08-24T08:34:14.095Z

dlms cosem class-10 class-22 obis

Why does signed 8-bit negative scaler (-3) cause 10^253 overflow and float32 rounding errors in smart metering billing?

General Discussion 10 replies 48 views 2026-08-22T17:22:30.007Z

dlms cosem scaler-unit class-3 data-precision

SecurityControl 0x10 vs 0x30 — is authentication-only just a DLMS checksum?

General Discussion 5 replies 26 views 2026-08-22T12:44:27.596Z

security-contro gmac integrity aes-gcm dlms-security

Power Quality Total Harmonic Distortion (THD) and Sag/Swell OBIS Registers

General Discussion 3 replies 14 views 2026-08-22T12:39:08.390Z

power-quality thd harmonics voltage-sag obis

COSEM Class 21 (Register Activation) for Dynamic Tariff Masking & CPP Rate Adjustments

General Discussion 3 replies 15 views 2026-08-22T12:38:23.163Z

Clock Synchronization (Class 8) Best Practices and Daylight Saving Time (DST) Transitions

General Discussion 3 replies 19 views 2026-08-22T12:37:59.005Z

clock class-8 dst rtc time-sync

DLMS Extended Register (Class 4) Status Byte Bitmask: Reverse Flow & Tamper Detection

General Discussion 3 replies 13 views 2026-08-22T12:37:33.917Z

extended-regist class-4 status-byte data-integrity

DLMS Special Days Table (Class 11) for Holiday Tariff Overrides

General Discussion 3 replies 13 views 2026-08-22T12:36:58.319Z

special-days class-11 tariff billing calendar

Parsing DLMS Octet-String Date/Time into ISO 8601 Strings

General Discussion 2 replies 12 views 2026-08-22T12:36:42.084Z

date-time octet-string iso8601 data-types parser

DLMS/COSEM Activity Calendar (Class 20) TOU Tariff Table Switching

General Discussion 3 replies 19 views 2026-08-22T12:36:16.588Z

activity-calend tou tariff class-20 smart-grid

COSEM Class 23 (Register Table) and Class 24 (Compact Array) for High-Speed Readout

General Discussion 3 replies 14 views 2026-08-22T12:33:37.092Z

compact-array class-24 optimization bandwidth fast-read

DLMS Single-Phase vs Three-Phase OBIS Register Mapping Reference

General Discussion 2 replies 11 views 2026-08-22T12:33:21.463Z

obis-table registers three-phase metering-refere

DLMS Conformance Block Negotiation: Conformance Bits Demystified

General Discussion 2 replies 12 views 2026-08-22T12:33:08.163Z

conformance aarq application-lay protocol-negoti

OBIS 1.0.32.7.0.255 Phase A Voltage Scaler-Unit 0xFF Parsing Bug (-1 vs 255 Exponent)

General Discussion 4 replies 18 views 2026-08-22T12:32:50.242Z

obis scaler-unit register class-3 voltage

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