Changes

<p style="color:red">The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads'''00.07.05.4'''] firmware version.</p>  

<p style="color:red">The information in this page is updated in accordance with [https://wiki.teltonika-networks.com/view/FW_%26_SDK_Downloads'''00.07.05.4'''] firmware version.</p>  

==Introduction==

==Introduction==

DLMS (''Device Language Message Specification'') is a set of standards used for communication between various meters, monitoring equipment, and the respective controllers. It uses '''TCP/IP or serial communication''' and utilizes '''Client and Server topology''', where the client polls the data from the server (''usually gas/electricity/water meter''). It should be noted, that there often confusion between IEC 62056-21 and DLMS. '''IEC 62056-21 is not DMLS'''.

DLMS (''Device Language Message Specification'') is a set of standards used for communication between various meters, monitoring equipment, and the respective controllers. It uses '''TCP/IP or serial communication''' and utilizes '''Client and Server topology''', where the client polls the data from the server (''usually gas/electricity/water meter''). It should be noted, that there often is confusion between IEC 62056-21 and DLMS. '''IEC 62056-21 is not DLMS'''.

    

    

COSEM (''Companion Specification for Energy Metering'') is a protocol that falls under the DLMS standard, and it provides application and transport layers for the protocol. COSEM defines a set of '''objects''' that represent the data and functions of the meter, and a set of '''services''' that allow the client to access the objects. COSEM also specifies the '''security''' mechanisms for authentication and encryption of the messages. It should be noted, that for now our implementation of COSEM only allows us to only perform read operations on DLMS servers, with write operations not currently supported.

COSEM (''Companion Specification for Energy Metering'') is a protocol that falls under the DLMS standard, and it provides application and transport layers for the protocol. COSEM defines a set of '''objects''' that represent the data and functions of the meter, and a set of '''services''' that allow the client to access the objects. COSEM also specifies the '''security''' mechanisms for authentication and encryption of the messages. It should be noted, that for now our implementation of COSEM only allows us to only perform read operations on DLMS servers, with write operations not currently supported.