Unable to connect L&T ER300P Meter

By Windmill , 7 January, 2026
Forums
DLMSDirector

Dear sir,

I'm trying to connect L&T ER300P meter by Optical probe. It is not able to connect the meter. And it show a pop up message called - Failed to receive reply from the device in given time.

Here is the Error and Device Property Details
1. https://ibb.co/tTSRbvGw
2. https://ibb.co/W4vJJk4v

Kurumi

7 months ago

Hi,

One of your settings is different from what the meter expects. Try to connect without authentication. Change the interface from HDLC to HdlcWithModeE If that fails. Try also change the manufacturer to the Indian standard.

BR,
Mikko