How to identify the Firmware Version, Model, and Serial Number of PowerLogic PM5100 series meter.
1. Scroll to Maint in the menu list.
2. Press Maint.
3. Press Diag.
4. Press Info.
5. Press "Down" and "Up" to view the model, firmware (OS)version, serial number, and other power meter information.
6. Press "Up" to return to the Maintenance screen.