GXDLMSTranslator 'NoneType' object has no attribute 'moreData'

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By mrphoenix , 22 March, 2020
Forums
Gurux.DLMS

Hi there,
May somebody help me with the error I get when trying to decode a message from my meter?
I'm using a Siemens IM350 SmartMeter that is pushing messages once a second without sending anything to it, so no initialization happening.
The data I get is encrypted with a block cypher key.
When useing Gurux DLMS Transfer and the correct cypher key I get a perfectly fine decoded XML with all the data I need.
When trying the same with GXDLMSTranslator in Python I get the error message:
"'NoneType' object has no attribute 'moreData'"

I'm using:
python 3.7.3
gurux-common 1.0.13
gurux-dlms 1.0.58

The code I'm using is:
----------------------------------------------------------------------------------------
# import modules needed
from gurux_dlms import *

# reading from serial interface
data = "7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014d81a188d82989644c709df1f1e596d4c26a2ffd254d2e8ac5fdbfbb3e3c9f6f5b13ca752720feb366ba57086a153442f8c8fbc56cdb46fc0b92b1e9e2b9c5433bdffaffe1b037d65624b2fa1c6178caee285ac2e2507877c47b0a6e6c2e27e"

xml = ""

# decrypting received data
decrypt = GXDLMSTranslator(TranslatorOutputType.SIMPLE_XML)
decrypt.comments = True
decrypt.blockCipherKey =GXByteBuffer.hexToBytes("My Cypher Key")

try:
xml = decrypt.messageToXml(GXByteBuffer.hexToBytes(data))
except ValueError:
print("Value-Error occured")
# output
print(xml)
----------------------------------------------------------------------------------------

some examples are:
7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014d823276045d54aa189b6cff959acde7909846ac7d6cdeff082cb1232d8d62976b24e91aa8d06eeca29c87a4de23dff2b4ffc0483399f1814e3456f26af70e36c74e0cf4c679f90c95c990965937993d65f8b21ba6b3c0137268b14ea2c8d7e

7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014d8243d1afa007c684fa90c248a686d30fdaa2cfd491036de86abcf4e37d323b839b7879c1b98bdb135a4bffac28e2c475b65dc3be82626aaeef58bf73abf98c4f9084b8f4dc9b45adbde391fe6c29614ee785707378755e90291e426f9ee7e

7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014d825dd1edd579d1a4705d643bcd13602da62d49358b4c1b96b4bd3eaf3db5574c44d7331d1ab348cf993f83a0f1f3e221f24cebac723c31e3c2e0c6bab451e3c1fc5c51f5e3a319e3e1d6ea99d947b3523d454c79fd44beaf66ce7b4b1c97e

7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014c50b9217f54a1e99bc246bc7edcfcde6c5b6704b9af0cc2ea6bcd0ac8177b39738c500af3e9ece8c1f3146edb292af11225915fa93331bc3437ade0f789e915968a0d17cd940ed19e7561092cd44facac099940b4906ce806ad53a34fae37e

7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014c50cba18d236b0a1eca2625d77934a2cfbe62497ff9aeb6bc5e83a4dded4b83cef08c9830a234e80f3c008c1d5afed9102a6ed750ee31f65ec36769386be17a430fc85a544deadc38cb94dc7c0e3cd8094b296fc3307c1e395fa2f3487987e

7ea079cf0002002313d986e6e700db08534d53677004b5f75f200014c50dc41320c69386418c9148920b18b2bd3f73053ffd66d8baa1cdcf75897832a6fac845f0363bd12111b623ecba50a0c65260f28acaa3cdc953c9f73bfba0cf9f69ac2570f4bb38d309182dc4aa58fb33015a190e5c8ee0d16750ac63f07e

All of them are decoded fine by Gurux DLMS Transfer, but not with GXDLMSTranslator.

Cheers,
Philipp

Kurumi

6 years 2 months ago

Hi Philipp,
Thank you fro thin info. This is fixed and new version is released later today.

BR,
Mikko

Kurumi

6 years 2 months ago

Hi,

This is fixed. Get the latest version.

BR,
Mikko

mrphoenix

6 years 2 months ago

Hi Mikko,

Thx for coming back to me that quick.
I've updated all Gurux-Libraries with "git pull ..." and pip install.

I'm now running:
gurux_dlms version: 1.0.58
gurux_net version: 1.0.17
gurux_serial version: 1.0.14

Nonetheless I do get the same error-message "'NoneType' object has no attribute 'moreData'"

May you assist further please?

Thx,
Philipp

Kurumi

6 years 2 months ago

Hi,

Update gurux.dlms. run

pip install --upgrade gurux_dlms. Your version should be 1.0.64.

BR,

Mikko

mrphoenix

6 years 2 months ago

Hi!
Did that but still no luck.
Why does your Python Push Example report back a different version of the library?
Cheers,
Philipp

Kurumi

6 years 2 months ago

Hi,

You have not installed the latest version. Try with this:

pip3 install --upgrade gurux_dlms. Your version should be 1.0.64.

You can get list from outdated version running:
pip list --outdated
or
pip3 list --outdated

BR,
Mikko

mrphoenix

6 years 2 months ago

Good Morning Mikko,

Somehow the versions of the gurux-modules got mixed up. Probably because I installed them by running pip and in addition to that cloning them from git.
Anyway I'm now able to decode my data! :-)
That's a huge step of integrating my smartmeter towards the integration in my volkszaehler-application!

Thank you very much!