You can make a RS485 connection to the Meter Also.

By using the tested Cable on a B4, P42 and a P32 Modem module.

So the old 2G modem will work as a communications module to connect a LTE/4G modem to.

Here is the wiring for a M2M/Riecktron Modem

NOTE:

The Text message for the M2M Modem on the RS485 connector is:

APN:apnNAME

IP2:SERVER.PNPSCADA.COM

PORT2:13000

Mode2:client

INT2:30

IDX2:2

BAUD2:9600

FRAME2:8N1

RESET

09-06-2023

Another thing to add to the post above:

Sometimes it works better when you load it as a DLMS meter (as above), sometimes it might work better when you load it as a L&G IEC meter. (Loading it as an IEC meter you don't need a multidrop, just the serial number). This is unfortunately dependent on the firmware on the meter, so you might have to deal with this on a case-by-case approach.