Will PME retain historical data if a meter is deleted and then added again later with the same name

Issue

User would like to keep the historical data of a certain device but needs to make a change that requires the device to be removed from the PME system.

Product Line

Power Monitoring Expert 2024

Power Monitoring Expert 2023

Power Monitoring Expert 2022

Power Monitoring Expert 2021

Power Monitoring Expert 9.x

Power Monitoring Expert 8.x

Power Monitoring Expert 7.2.x

Environment

PME Databases

Management Console

Cause

User needs to remove and readd a unit from their PME system, such as for changing out the device connection type from serial to direct ethernet or some other reason but would like to ensure that their historical data remains.

Resolution

As long as the node/source name remain the same, the historical data will remain intact since ION_Network and ION_Data reference logged data to the node name. If a device/node is deleted from Management Console, and a new device with the same name is created, ION_Data will continue to log the new data on top of the existing data from the original source name.