Skip to main content
Home
for DLMS smart meters

Main navigation

  • Home
  • Products
  • About us
  • Open Source
  • Community
  • Forum
  • Downloads
User account menu
  • Log in

Breadcrumb

  1. Home
  2. L&T ER300P - RS232 Communication Cable (PL2303)

L&T ER300P - RS232 Communication cable (PL2303)

By skbohra, 7 November, 2024
Forums
General discussion

I am using a PL2303 based USB to RS232 converter which has 4 wire (TX, RX, GND, VCC).

I have connected RJ11 (4 pin) connector as per the meter ER300P datasheet.

I am yet to test this cable with the meter, wanted to confirm if this will work as I don't have access to the meter and need to test the cable in the field.

Any help on this is highly appreciated.

Profile picture for user Kurumi

Kurumi

1 year 5 months ago

Hi, Buy the USB to RJ11…

Hi,

Buy the USB to RJ11 converter. It will save a lot of your time.

BR,
Mikko

skbohra

1 year 5 months ago

Mikko, Can you suggest…

Mikko,

Can you suggest tested cable for this meter? Any link to buy?

Thanks

Profile picture for user Kurumi

Kurumi

1 year 5 months ago

Hi, There are no big…

Hi,

There are no big differences between RJ11 cables. Optical probes are a different story.
The only thing you need to check is that the USB driver works with your PC. Some (cheap) USB dongles don't support Windows 11.

BR,
Mikko

  • Create new account
  • Reset your password

Hire Us!

Latest Releases

  • Tue, 04/14/2026 - 11:47
    gurux.dlms.java 4.0.93
  • Mon, 04/13/2026 - 16:12
    gurux.dlms.java 4.0.92
  • Mon, 04/13/2026 - 11:39
    Gurux.DLMS.Net 9.0.2604.1301
  • Tue, 04/07/2026 - 17:17
    Gurux.DLMS.Python 1.0.197
  • Tue, 04/07/2026 - 15:03
    gurux.dlms.c 9.0.2604.0701

New forum topics

  • Connecting To iskrameco ME382- Single Phase Meter with Optical Probe
  • Create custom AARQ Request for encrypted communication
  • Issue when reading Itron Type620 meter
  • Handling Unexpected Disconnects
  • DLMS Communication Issue – No Response (L&T Meter via USB Probe)
More
RSS feed
Privacy FAQ GXDN Issues Contact
Follow Gurux on Twitter Follow Gurux on Linkedin