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June 2015 DocID022113 Rev 2 1/31
AN3970
Application note
PLM smartplug V2 getting started
By Filippo Colaianni
Introduction
The purpose of this guide is to help the user fully use the PLM smartplug evaluation board in
a network with other smartplug boards and a data concentrator.
The document describes how to configure the board and how to interact with it; buttons,
LEDs, configuration jumpers, and all hardware components used, are described in detail. A
full description of the power line communication and its configuration and commands is also
provided.
The PLM smartplug evaluation board is based on the STM32F103CB microcontroller, the
ST7540 PLM module, and the STPM01 mono-phase energy metering IC. It implements a
PLM smartplug node which allows to monitor the energy consumption of a mains plug and
to control any kind of load in on/off mode by a relay. If the user wants to control a load
supplied by the monitored mains plug, it is necessary to respect a specific cabling scheme
described in Section 2. Moreover it is designed to fit a standard “503” wall box.
The voltage, current, power, active energy and the output status can be sent to a PLM data
concentrator through a power line communication network on request. Moreover, if the
power consumption changes, it is sent asynchronously to the data concentrator.
• Section 1 describes document and library rules
• Section 2 describes the smartplug hardware evaluation board, its modes, uses and
limitations
• Section 3 highlights how to use the smartplug board in a PLC network. Refer to the PLM
smartplug FW UM1459 user manual for more firmware and communication protocol
details
Section 4 shows the board schematics and bill of material. Refer to the PLM smartplug HW
UM1458 user manual for more hardware details.
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