1 Sep Power Quality and Revenue Meter. EM/EMT. IEC Communications Protocol. Reference Guide. BG Rev. A2. The IEC standard defines the protocol for serial interface. The protocol includes five communication modes (A, B, C, D, E) which may, or may not be. IEC (E). INTERNATIONAL. STANDARD. IEC. First edition. This English-language version is derived from the original.

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The protocol is usually half-duplex.

The hand held unit must return an iec 62056 password. List of International Electrotechnical Commission standards. It is designed to ieec over any media, including the Internet.

The Blue book describes the COSEM meter object model and the OBIS object identification iec 62056, the Green book describes the Architecture and Protocols, the Yellow book treats all the questions concerning conformance testing, the White book contains the glossary of terms. If iec 62056 parameter required is in low security group, a password authentication of the HHU is required before information can be read.

Communication by the IEC protocol

By using this site, you agree to the Terms of Use and Privacy Policy. This describes some registers that describe the current count of metered units i. The general protocol consists iec 62056 a “sign on” sequence, in which a handheld unit identifies itself to the iec 62056 unit.


If the password exchange is ok, the meter accepts the hand oec unit- it is “signed on.

Other IEC parts deal with Electricity metering – Data exchange for meter reading, tariff and load control. Next the meter informs the hand held unit about the various parameters that are available with it in various security iec 62056 viz. The physical media are usually either modulated iec 62056, sent with an LED iec 62056 received with a photodiodeor a pair of wires, usually modulated by a 20mA current loop.

Most metering units have special modes for calibration and resetting meter registers. Use British English Oxford spelling from December The meter and hand-held unit negotiate various parameters such as the maximum frame length during transmission and reception, whether multiple frames can be sent without acknowledging individual frames windowingthe fastest communication rate that they iec 62056 both manage only in case of mode E switching to HDLC etc.

IEC 62056 (DLMS/COSEM) Market Evaluation

The attributes and iec 62056 constitute an object. In case of high security parameters,the meter challenges the hand held unit with a cryptographic password. If 6256 parameter required is in no security group, just a get.

IEC iec 62056 currently IECwas an international standard for a computer protocol to read utility meters.

The iec 62056 held unit then sends a sign-off message. Retrieved from ” https: Occasionally a manufacturer will invent a new quantity to measure, 62065 in this case, a new or different iec 62056 type will appear in the meter definition.

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Any real world thing mapped to an appropriate class type can be described by the attributes defined in the standard; and the methods defined therewith allow iec 62056 to be performed on the attributes. It is one part of the identification of the object. From Wikipedia, the free encyclopedia. The following exchange usually takes a second or two, and occurs when a person from the utility company presses a meter-reading gun against a transparent faceplate on the meter, or plugs into the metering bus iec 62056 the mailbox of an apartment building.

If no sign-off iec 62056 is sent, the meter automatically signs off iec 62056 a previously negotiated time interval after the last message.

j Overview – IEC – OpenMUC

Views Read Edit View history. After signing on, the hand held unit generally reads iec 62056 meter description. These modes are usually protected by anti-tampering features such as switches that sense if the iec 62056 enclosure has been opened.

During sign-on, the handheld unit addresses a particular meter by number. This page was last edited on 24 Januaryat