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  2. Getting Invalid Logical Name In Android App When Clicking On Open Button

Getting Invalid Logical Name in Android App when clicking on Open Button

By raghavmish1, 20 July, 2025
Forums
Gurux DLMS for Android

Hi Sir,

I am getting below "Invalid Logical Name" while trying to connect Indian Standard Allied Meter which I am able to connect through DLMS Director App with same Parameters using Serial Connection but when I am trying to do it using Android APP I am getting "Invalid Logical Name" when clicking on "Open" button after putting Meter Properties.

My traces are as follows: Connecting /dev/bus/usb/001/002<- 01:32:55.784 7E A0 07 03 21 93 0F 01 7E
-> 01:32:55.842 7E A0 20 21 03 73 73 98 81 80 14 05 02 03 40 06 02 03 40 07 04 00 00 00 01 08 04 00 00 00 01 B7 29 7E
<- 01:32:55.850 7E A0 2B 03 21 10 FB AF E6 E6 00 60 1D A1 09 06 07 60 85 74 05 08 01 01 BE 10 04 0E 01 00 00 00 06 5F 1F 04 00 42 1E 5D FF FF 19 35 7E
-> 01:32:55.967 7E A0 37 21 03 30 6C 7C E6 E7 00 61 29 A1 09 06 07 60 85 74 05 08 01 01 A2 03 02 01 00 A3 05 A1 03 02 01 00 BE 10 04 0E 08 00 06 5F 1F 04 00 00 00 10 03 40 00 07 D1 F0 7E
<- 01:32:55.989 7E A0 07 03 21 53 03 C7 7E
-> 01:32:56.046 7E A0 20 21 03 73 73 98 81 80 14 05 02 03 40 06 02 03 40 07 04 00 00 00 01 08 04 00 00 00 01 B7 29

Can you please tell me what I am doing wrong here??

raghavmish1

4 months 2 weeks ago

Traces from DLMS Director…

Traces from DLMS Director app are below where I am able to read it properly.

TX: 18:10:32.264 7E A0 07 03 61 93 69 47 7E
RX: 18:10:32.399 7E A0 20 61 03 73 05 9E 81 80 14 05 02 03 40 06 02 03 40 07 04 00 00 00 01 08 04 00 00 00 01 B7 29 7E
TX: 18:10:32.442 7E A0 6B 03 61 10 2A FF E6 E6 00 60 5D A1 09 06 07 60 85 74 05 08 01 03 A6 0A 04 08 31 32 33 34 35 36 37 38 8A 02 07 80 8B 07 60 85 74 05 08 02 02 AC 12 80 10 28 1F 30 32 47 2C 65 37 08 33 67 10 68 62 34 5A BE 23 04 21 21 1F 30 00 00 00 00 E2 4C 4F 7C B9 15 4F A9 02 BD 01 7D 5B 16 12 49 CC A8 EE DE AB 0C F2 5C 42 42 9A 16 7E
RX: 18:10:32.797 7E A0 77 61 03 30 AD 6C E6 E7 00 61 69 A1 09 06 07 60 85 74 05 08 01 03 A2 03 02 01 00 A3 05 A1 03 02 01 0E A4 0A 04 08 41 4C 4C 00 00 7A 26 C4 88 02 07 80 89 07 60 85 74 05 08 02 02 AA 12 80 10 31 45 4E 45 53 41 53 5F 50 36 77 52 4A 32 31 46 BE 23 04 21 28 1F 30 00 00 00 00 A7 40 70 C5 D3 94 F8 CD 87 44 E0 53 31 B2 36 B4 2F 9B CE AC 96 F3 27 E6 39 40 79 BC 7E
TX: 18:10:32.814 7E A0 3E 03 61 32 7B 46 E6 E6 00 CB 30 30 00 00 00 01 60 9A 05 BF 6D 22 F2 92 C0 57 FB 09 08 06 51 36 5D 08 A6 24 AA AC 56 DB 41 CF 2A 52 D6 DC AF 32 E2 A5 DF 9D 2B B4 8A 54 FB C0 27 19 FB 7E
RX: 18:10:33.004 7E A0 37 61 03 52 0E 3A E6 E7 00 CF 29 30 00 00 00 01 7A A2 25 2F 20 0E AF E7 6C A8 16 8C B2 A8 39 54 08 66 DD 5F 69 6E AD A2 07 17 B7 61 BA 0F 72 48 99 6A BC 27 89 E3 7E

When I tried to translate these in DLMS translator I got that SNRM request source is different in both the request one is from Android and other one is from DLMS Director.
Another difference which I could see is Android using Application Context as "LN" but DLMS Director APP is using application context as "LN_WITH_CIPHERING". Can you please suggest here?

Profile picture for user Kurumi

Kurumi

4 months 2 weeks ago

Hi, You need to change cient…

Hi,

You need to change cient address to 0x30.
Then change security to AuthenticationEncryption and set correct block cipher and authentication keys.

BR,
Mikko

Profile picture for user Kurumi

Kurumi

4 months 2 weeks ago

Hi, You need to check "Use…

Hi,

You need to check "Use logical name referencing". I believe that is not checked at the moment.

BR,
Mikko

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