====== Metering: Load Profiles ======

===== What is a Load Profile? =====

A **Load Profile** is a special feature found in certain smart utility meters. Instead of only providing the current, real-time consumption value, a meter supporting load profiles continuously stores measurements in its internal memory at strictly defined intervals (usually every **15 minutes**). 

This historical data block can then be read by the Mervis RT controller in batches, ensuring no data points are lost even if communication is temporarily interrupted.

===== Use Cases and Legal Requirements =====

Reading load profiles is often a strict legal or regulatory requirement rather than just a convenience feature. 

Most notably, retrieving 15-minute load profile data is legally required for operators of an **LDS (Lokální distribuční soustava - Local Distribution System)**. It is used for precise billing, grid balancing, and demonstrating compliance to the primary distribution network operator.

===== Supported Protocols (DLMS & M-Bus) =====

Because load profiles require transmitting arrays of historical data equipped with precise timestamps rather than simple real-time registers, they require specific communication handling:

  * **M-Bus:** Commonly used for utility meters. **Note:** While the general M-Bus standard has basic provisions for historical data, extracting true 15-minute load profiles almost always relies on proprietary, manufacturer-specific extensions and commands. Because of this, load profile extraction is not universally supported across all M-Bus meters.
  * **DLMS/COSEM:** The primary standard for smart electricity metering. **Important:** Mervis currently supports DLMS in a *limited way*, and **only in its TCP version**.

===== Device Compatibility =====

**Important Note:** The ability to store and transmit load profiles is a highly specialized hardware feature. Not all DLMS or M-Bus meters on the market support internal historical storage. Due to the proprietary nature of how historical data is implemented by manufacturers, only a strictly defined subset of meters is officially tested and supported by Mervis RT.

==== Supported Meters ====
  * **EMU Professional II 3/100 M-Bus LP** (The "LP" designation specifically indicates Load Profile support. This device features a certified 15-minute interval storage capable of retaining over 3 years of historical data).
  * //(List additional supported DLMS TCP or M-Bus meters here as they are officially verified)//

===== Configuration in Mervis IDE =====

//To configure the reading of a load profile in Mervis IDE, you must define the specific data array parameters on the communication channel.//

//(Placeholder: Add step-by-step IDE channel configuration or ST code snippet for parsing the array here)//