Before commenting read Forum rules
Don't comment the topic if you have a new question.
You can create a new topic selecting correct category from Gurux Forum and then create a new topic selecting "New Topic" from the top left.
Forums
Hi,
We intend to develop a dlms based water meter which runs for 10 years with irreplaceable , we plan to use a low power low data rate LoRa based communication technology, so i need to know
1) Whether it is possible to send the dlms frames via LoRa technology?
2) Will there be increase in power consumption if we use DLMS protocol?
Regards
Sreenath
Dlms Queries
Hi,
1. Yes, it's possible. Communicating is slow, but working.
2. It depends on where to compare. DLMS is not light protocol. It also depends on what to read from the meter, etc.
BR,
Mikko
dlms
Hi,
I didn't quite understand the 2nd point that u mentioned-"It depends on where to compare"
What are the advantages of using dlms in water metering?
Regards
Sreenath
Dlms Queries
Hi,
DLMS is a standard (pros), but it's not light or easy (cons). You don't send a few bytes and get a reply.
There is a lot of features that are defined on the standard. You don't need to think about how to implement them.
BR,
Mikko
Hi,
Hi,
We are in a little bit confusion that whether the DLMS protocol is essential for water meter design? ,and also we are focusing on low power design which should have a 10 year life . So can you please provide your expert opinion in this scenario?
Thank you
Sreenath
Dlms Queries
Hi,
I can't say anything because I don't know what kind of radio you are planning to use, how often data is sent, etc. DLMS is used in Italy in water and gas meters. They have own substandard from DLMS in Italy.
BR,
Mikko
Hi,
Hi,
We are planning to use LoRa technology at 868 MHz frequency. The data will be sent every week. We are focusing on a low power design.
Regards
sreenath
Hi,
Hi,
It's hard to say, because I don't know what kind of system you want to build or nothing from HW.
You need to study DLMS and other protocols. Don't make a new one. Use existing protocols.
BR,
Mikko
I created a client object in
I created a client object in python and i have set the parameters such as client id,server id,interface type and logical name referencing as true.After that i sent snrmrequest but the data is null
Hi, Joseph,
Hi, Joseph,
Can you send trace? You can get it like this:
python main.py -h localhost -p 4061 -t Verbose
It should be something like this:
TX: 14:36:46.421204 7E A0 07 03 21 93 0F 01 7E
RX: 14:36:46.429182 7E A0 1E 21 03 73 C3 7A 81 80 12 05 01 80 06 01 80 07 04 00 00 00 01 08 04 00 00 00 01 53 3B 7E
BR,
Mikko
Thanks for reply...
Thanks for reply...
I established connection ...but to read objects ...
I have the following details
OBIS : 1.0.12.27.0.255
IC :3
Attribute : 2
Data type : Unsingned16
Scaler : -2
unit : V
if i try with read() it returns null
Hi,
Hi,
Read updates the given attribute. If your object is GXDLMSDataObject then you get value like this:
obj = GXDLMSDataObject("1.0.12.27.0.255")
read(obj, 2)
print(str(obj.value))
BR,
Mikko