Issue with reading secure premier300 using DLMS Director

By holmium_user, 21 June, 2023
Forums
DLMSDirector

Hi,
I new to this forum. So if miss something please correct me.

I have a secure premier 300 meter which supports DLMS protocol. I am trying to connect with meter using USB to RS232 cable. But I am getting no response.

The meter serial number is X1714625

The connection details is attached.

Kurumi

2 years 11 months ago

Hi,

Check your wirings first. Then select Indian Standard as a manufacturer. Select HDLC to interface. Now I can't remember if the default baud rate of the secure premier is 4800 or 9600. You need to try both.

BR,
Mikko

holmium_user

2 years 11 months ago

Hi,

As per manufacturer the default configurations are

Baud rate - 9600 , Parity - None, stop bit -1

Data bits – 8 , authentication password – ABCD0001

I am using a RS232 to Ethernet adapter to connect with meter.

I am not able to get any response from meter.

I have verified the connections. It is as per the connection given by manufacturer, which I have shared earlier.

Also attaching the response.

Image

Kurumi

2 years 10 months ago

Hi,

Try to read the meter first without RS232 to the Ethernet adapter.
Ethernet adapters might cause problems sometimes.

Check your wires. That is a really common reason.

BR,
Mikko

holmium_user

2 years 10 months ago

Hi

My problem is resolved now. The issue was with connection only. I was not connecting the RTS/CTS to the RS232 converter. Although most of the RS232 communication is established using RX, TX and GND pin only. But in this situation RTS/CTS was required to pulled up to the V+ of the RS232 driver.

Kurumi

2 years 10 months ago

Hi,

Thank you for letting me know about this. Solving communication problems for RS-232 and RS-485 can be really hard because there are multiple reasons why the meter doesn't reply.

BR,
Mikko