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DLMS / COSEM

Top Voted Discussions

Highest upvoted technical inquiries, protocol cheat sheets, and verified answers.

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Python parser for compact-array capture objects

python parser compact-array sharur_gate2_admin

77 21 3
S

HLS GMAC fails after Invocation Counter reset

hls-gmac security dlms sharur_gate2_admin

87 26 3
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Decode ActionResponseNormal: OtherReason vs temporary failure

action apdu cosem sharur_gate2_admin

83 24 3
S

Profile Generic selective access: range descriptor example

profile obis selective sharur_gate2_admin

56 18 2
S

HDLC frame rejected after SNRM: where to inspect HCS and FCS

hdlc trace framing sharur_gate2_admin

81 23 3
S

Gurux Java client: safe Association LN retry loop

java gurux retry sharur_gate2_admin

62 21 2
D

Troubleshooting HDLC SNRM Handshake Timeout and 4-Byte Address Extension Bit

hdlc snrm handshake framing rs485 david_miller

88 19 4
S

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

activity-calend tou tariff class-20 smart-grid sarah_jenkins

73 19 3
C

PLC (G3-PLC / PRIME) Media MAC Framing & Intermittent DLMS Timeouts

plc g3-plc prime smart-grid noise-filtering carlos_mendez

46 13 2
A

COSEM Class 15 (Association LN): Access Rights & Attribute Level Security

association-ln class-15 rbac access-rights security alex_turner

40 10 2
S

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

register-activa class-21 tariff-mask energy-register sarah_jenkins

65 15 3
A

Deciphering General-Ciphering (0xDB) and General-Signing (0xDF) APDUs

general-cipheri apdu security gmac decryption alex_turner

40 10 2
S

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

date-time octet-string iso8601 data-types parser sarah_jenkins

44 12 2
S

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

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

61 13 3
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OBIS 1.0.32.7.0.255 Phase A Voltage Scaler-Unit 0xFF Parsing Bug (-1 vs 255 Exponent)

obis scaler-unit register class-3 voltage sarah_jenkins

86 18 4
E

DLMS/COSEM Limiter Object (Class 71) for Demand Limiting & Overload Tripping

limiter class-71 demand-limiting grid-stability elena_rostova

40 10 2
A

DLMS High-Level Security (HLS 5 / GMAC) AARQ Association Rejection (Result: 0x01)

security hls5 gmac aarq encryption alex_turner

88 19 4
M

Selective Access by Range on Profile Generic (Class 7) Returning Empty Buffer

profile-generic selective-acces class-7 load-profile marcus_vance

67 16 3
C

IEC 62056-21 Mode E Optical Probe Sign-On and Baud Rate Switch Failure

optical-probe iec-62056-21 mode-e baudrate serial carlos_mendez

63 14 3
S

DLMS Conformance Block Negotiation: Conformance Bits Demystified

conformance aarq application-lay protocol-negoti sarah_jenkins

44 12 2

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