Each unique device (specific model of a meter that has a common register map) will require an OPI template. Once the OPI template has been created it can be used for other like type devices.

To create a template 

Go to emx.packetpower.com and access the Open Power Interface (OPI) menu under the Manage tab.

Click OPI Templates, then Add Template (+).  This will open the "Add Template" dialog box. 

Complete the form.

Template Name:  Template friendly name - typically the commercial name and model of the device being monitored)

Template Sysoid:  For Modbus mapping use "234234". For SNMP mapping use the correct System OID.

Template Protocol:  Select either Modbus or SNMP from the drop down menu depending on the device's communication protocol

Click Submit.