GXDLMSData

By alnardn , 2 October, 2023
Forums
Gurux.DLMS

Hello! Is it possible to manipulate relay blocker using dlms library for python? For example, I need to turn on relay blocker, how can I make it through code?

Kurumi

2 years 11 months ago

Hi,

I believe that you need disconnect control to do it.
Because I don't know what meter you are using, you need to read the association view and check if GXDLMSDisconnectControl is included.

Then you can use remoteDisconnect and remoteReconnect methods to close the valve.

BR,
Mikko

alnardn

2 years 11 months ago

Thanks for your answer! I checked these methods in GXDLMSDisconnectContol.py, what is parameter named client? This parameter has method "method" and i don't undestand for what object parameter relates.

Kurumi

2 years 11 months ago

Hi,

You can use it like this:

d = GXDLMSDisconnectControl("YOUR_OBIS_CODE")
#Or find disconnect control from the self.client.objects if you have read the association view.

#Disconnect
self.readDataBlock(d.remoteDisconnect(self.client), reply)
#Reconnect
self.readDataBlock(d.remoteReconnect(self.client), reply)

BR,
Mikko

alnardn

2 years 11 months ago

Self.client - from what class we take it? And this client is GXDLMSClient?

alnardn

2 years 11 months ago

Thank you! I tried to call remoteReconnect like you recommended, but it failed with error that this method takes only two arguments. I read one more time script GXDLMSDisconnectControl.py and used it as "rele.remoteReconnect(client)". Anyway connection was not established. There is my code:
client = GXDLMSClient(clientAddress=48)
settings = GXSettings()
settings.getParameters(['', '-S', 'COM15', '-c', '48', '-s', '1'])
reader = GXDLMSReader(settings.client, settings.media, settings.trace, settings.invocationCounter)
settings.media.open()
reader.initializeConnection()
rele = GXDLMSDisconnectControl("0.0.96.3.10.255")
rele.remoteReconnect(client)
print(rele.controlState)
# prints DISCONNECTED
Where did i make mistake?

Kurumi

2 years 11 months ago

Hi,

You need to change at least this:

rele.remoteReconnect(client)
to

self.readDataBlock(rele.remoteReconnect(settings.client), reply)

remoteReconnect only generates the bytes. It doesn't send them to the meter.

BR,
Mikko

alnardn

2 years 11 months ago

It worked, but remoteReconnect changes relay state to "ready for reconnection", is there a way to exactly turn on rele?

Kurumi

2 years 11 months ago

Hi,

You need to change control_mode to 2 or 4.. Then the relay is connected directly without manual intervention.

BR,

Mikko

Kurumi

2 years 11 months ago

Hi,

You can change it like this:

rele = GXDLMSDisconnectControl("0.0.96.3.10.255")
rele.controlMode = ControlMode.MODE_2
self.write(rele, 4)

BR,
Mikko