CLOU METER CONNECTION

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By samuel , 18 November, 2021
Forums
DLMSDirector

Please I am working on a Clou meter, CL730D21L. Could you please help with the communication interface properties of the RS485 i.e. baud rate, parity, stop bits, etc; Low and HighGMAC Authentication passwords and client address in each case. I intend to use the details to connect to the meter using DLMSDirector. Thanks

Kurumi

4 years 6 months ago

Hi,

The serial port settings might be anything because they are configurable, but this is what we have used last time with Clou:
9600 8None1

Client address: 0x1
Server Logical address: 0x1
Server Physical address: 0x10

This was ciphered connection. If you don't have ciphered keys, you can try to change the client address to 0x10.

BR,
Mikko

samuel

4 years 6 months ago

Hello,
Thanks for the information however we have tried this:
9600 8N1 client ID 0x10 Logical 0x1 Physical 0x10
But it is not connecting using the RS485 terminals. Please kindly assist, thanks.

Kurumi

4 years 6 months ago

Hi,

There are usually two reasons why the meter doesn't reply.

1. Wires are connected wrong. Check this. This is a really common reason.
2. One of the serial port settings is wrong and the meter doesn't reply because of this.
Check the manual, if the settings are there. If the settings are not described on the meter manual, I can get the correct settings for you if you can read the meter with meter manufacturer software,

BR,
Mikko

samuel

4 years 6 months ago

Thanks for the suggestion to use the meter manufacturer software. The optical cable was used with the these settings successfully on the meter manufacturer software: 300 baud rate, 8 bits, EVEN parity, 1 stop bit.
But when same cable and settings were used for DLMS director, it was not connecting, please why?

Kurumi

4 years 6 months ago

Hi,

One of the settings is wrong. I believe that server physical addresses are different.
Can you read that meter with an Optical probe to check the address?
If you add hex trace from the bytes that another application is sending I can check them for you.

BR,
Mikko