There are some ways on how to reboot, or reset the CMeX50.

• Reboot device use

  device cmex50address reset

• Factoryreset device

  device cmex50address resetb0

Then it's always a good praxis to force a continuously 'search of meter' by using following command after a minute.

device cmex50address sndud device.command.userdata=017C03696377FF

Telnet

Connect to ip, and use port 9999 (default)

Rest

curl --user admin:admin \ 
'http://localhost:8889/Elvaco-Rest/rest/console/command' \
--header 'Content-Type: application/json' \
--data '{
"command": "device",
"params": [
"62001337"
, "resetb0"
]
}'

And after factoryreset (resetb0), let us send 'search for meters' command.

curl --user admin:asdasd \
'http://localhost:8889/Elvaco-Rest/rest/console/command' \
--header 'Content-Type: application/json' \
--data '{
"command": "device",
"params": [
"62001337"
, "sndud"
, "device.command.userdata=017C03696377FF"
]
}'

CMe3100 Interface
This feature is supported from version 1.9.1

And to  start continuously search mode, you can use the predefined command in the command list.