An ePO DXL service is running and available on the DXL fabric. If version 5.0 or later of the DXL ePO extensions are installed on your ePO server, an ePO DXL service should already be running on the fabric. If you are using an earlier version of the DXL ePO extensions, you can use the ePO DXL Python Service.
The Node-RED DXL client is authorized to invoke the ePO DXL service, and the user that is connecting to the ePO server (within the ePO DXL service) has permission to execute the "system.findTag" remote command (see Client Authorization).
Here is the Node-RED flow content for this solution:
"label": "ePO Remote Command Example",