DLMS Python Client

By technoshell , 18 July, 2020

Forums

Respected Sir

I am using GURUX.DLMS.Client.Example.python. I am using python3.7 and installed all dependencies listed in requirements.txt. I first read the Inesh make meter from DLMS director with low authentication and it worked fine. I also checked it with Renesas utility and it also worked fine.
I ran it with the command
python main.py -S COM6 -t Verbose -c 32 -s 1 -d India -C None -a Low -P genesis

This gives a huge amount of information.
I actually need only Active Energy , Reactive Energy and Apparent Energy.

Could you please guide on how to get these without going through the entire sequence.

Thanks and Regards
Ajit

Hi Ajit,

Each DLMS meter is different and for this reason all the objects are read from the meter. You need to check what is Logical name of the object that you want to read and then find readAll and remove everything after self.initializeConnection().

Then you can read example register object like this:
it = GXDLMSRegister("LOGICAL NAME")
//Read scaler and unit.
self.read(it, 3)
//Read value.
self.read(it, 2)

You can use Renesas or GXDLMSDirector to read the data and find out object types and correct logical names.

BR,
Mikko

Thank You Sir,

I will try it out.

Regards
Ajit

Dear Sir

As advised by you I changed the code to read Frequency. I checked the logical name from GXDLMSDirector. I am attachng the screen shot of what I got from the meter.

Could you please guide me if this is correct and how to get the Frequency value and unit?

Regards
Ajit

def readAll(self, outputFile):
try:
read = False
self.initializeConnection()
it = GXDLMSRegister("1.0.14.7.0.255")
#Read scaler and unit.
self.read(it, 3)
#Read value.
self.read(it, 2)

# if outputFile and os.path.exists(outputFile):
# try:
# c = GXDLMSObjectCollection.load(outputFile)
# self.client.objects.extend(c)
# if self.client.objects:
# read = True
# except Exception:
# read = False
# if not read:
# self.getAssociationView()
# self.readScalerAndUnits()
# self.getProfileGenericColumns()
# self.getReadOut()
# self.getProfileGenerics()
# if outputFile:
# self.client.objects.save(outputFile)
except (KeyboardInterrupt, SystemExit):
#Don't send anything if user is closing the app.
self.media = None
raise
finally:
self.close()