Dlms meter reading software serial#
Dlms meter reading software manual#
Dlms meter reading software code#

serial communication with devices according to the DLMS/COSEM standard by binary HDLC protocol.Д«oth of these protocols support reading values and reading data from historical profiles.

text-oriented communication protocol IEC 62056-21 (a serial variant as well as a variant for working with files).

This method is suitable for applications requiring communication with few to several dozen electricity meters.

communication via the SGCom process (Smart Grid Communicator).

The D2000 application server offers two different ways to obtain data from meters supporting DLMS/COSEM standards: 2 ( object_list) we get a list of objects - their class_id, logical_name and base_name (for SN referencing) вЂ“ or the access rights to them (for LN referencing). In LN referencing mode - using the Association LN object (class_id=15) with a fixed predefined address logical_name=0.0.40.0.0.255. In SN referencing mode - using the Association SN object (class_id=12) with a fixed predefined address base_name=0xFA00. The DLMS/COSEM client can read the list of objects that are offered by the energy meter (provided that the meter implements this feature): Short_name = base_name + ( attribute_id - 1) * 0x08 The address of a particular attribute is calculated from the start address and the attribute number as Each object is assigned a so-called start address ( base_name). At the same time, it also limits the number of objects that are addressable in the device. It consists of mapping the address of an object and an attribute to a 16-bit number. This method is called the Short Name (SN) referencing. Since the addressing of objects and their attributes in the way shown above is relatively extensive (requires 2+6+ 1 bytes), a simpler way was sought, especially suitable for less sophisticated devices. This addressing method is called the Logical Name (LN) referencing by the standard. The individual attributes of the objects are accessed via attribute_id (8-bit number). More on the OBIS address can be found in the IEC 62056-21: 2002 Serial protocol documentation.

Value group F defines the storage of processed historical data.Value group E defines further processing or classification according to an appropriate algorithm,.Value group D defines the type of processing,.Value group C defines the measured physical quantity,.Value group B defines the channel number,.Value group A defines the type of measured energy (energy type: 0=abstract objects, 1=electricity, 7=gas),.The system for allocating and coding the individual components instance_id is specified by the IEC 62056-61 standard.ДЇor illustration, the definition of an OBIS address according to IEC 62056-61 is as follows:

Dlms meter reading software code#

Profile generic (class_id=7): a class for accessing historical values stored by meters using the 'buffer' attribute.Д®ach object in DLMS/COSEM is identified by its class (16-bit class_id) and its instance_id (6-byte number), which is also called the OBIS code (Object identification system). The 'last_average_value' attribute indicates the energy accumulated in the previous period, the 'current_average_value' attribute indicates the energy from the current period. Register (class_id=3): just like Data, also, a multiplication factor is automatically applied and the technical units of the value are also given - the static attribute 'scaler_unit'.Д®xtended register (class_id=4): just like Register, also, a value timestamp is associated with the value - dynamic attribute 'capture_time'.Дemand register (class_id=5): Register for measuring the supply of stored energy in given periods (e.g. ) are grouped as attributes of one object, while the list of parameters is defined by the object class.Дata (class_id=1): basic class with the value of the data entity accessible via the 'value' attribute. Logically related values (measured value, value timestamp, technical units, value collection parameters. The DLMS/COSEM standard organizes the measured values as well as the configuration parameters of electricity meters and other meters into an object structure. Others define transmissions over the telephone (IEC 62056-41) and IP networks (IEC 62056-47).

Dlms meter reading software manual#

Some (62056-21) are designed for manual data collection using a reader (HHU - handheld unit).

The set of standards defines a whole set of protocols for communication with energy meters.