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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This describes some registers that describe the current count of metered units i. Most isc units iec 62056 special modes for calibration and resetting meter registers.

j Overview – IEC – OpenMUC

Views Read Edit View history. The hand held unit then sends a sign-off message. Iec 62056 modes are usually protected by anti-tampering features such as switches that sense if the meter enclosure has been opened.

iec 62056 If the parameter required is in low security group, a password authentication of the HHU is required 6256 information can be read.

The hand held unit must return an encrypted password.

Iec 62056 Blue book describes the COSEM meter 6256 model and the OBIS object identification system, the Green book describes the Architecture and Protocols, the Yellow oec iec 62056 all the questions concerning conformance testing, the White book contains the glossary of terms.

The meter and hand-held unit negotiate various parameters such as the maximum frame iec 62056 during transmission and reception, whether multiple frames can be sent without acknowledging individual frames windowingthe fastest communication rate that they can both manage only in case of mode E switching to HDLC etc.

IEC (DLMS/COSEM) Market Evaluation

Any real world thing mapped to an appropriate class type can be described iec 62056 the attributes defined in the iec 62056 and the methods defined therewith allow operations to be performed on the attributes. 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 at the mailbox of an apartment building. The general protocol consists of a “sign on” sequence, in which a handheld unit identifies itself to the metering unit.

If no sign-off message iec 62056 sent, the meter automatically signs off after a previously negotiated time interval after the last message. It is designed to operate over any media, including the Iec 62056.


IEC or currently IECwas an international standard for a computer protocol to read utility meters. The attributes and methods constitute an object. The protocol is usually half-duplex.

During sign-on, iec 62056 handheld unit addresses a particular meter by number. The physical media are usually either modulated light, sent with an LED and iec 62056 with a photodiode iec 62056, or a pair of wires, usually modulated by a 20mA current loop.

IEC 62056 (DLMS/COSEM) Market Evaluation

Retrieved from ” https: In case of high security parameters,the meter challenges the hand held unit with a cryptographic password. Next the meter informs the hand held unit about the various parameters that are available ied it in various security iec 62056 viz. Occasionally a manufacturer will invent a new quantity to iec 62056, and in this case, a new iec 62056 different data type will appear in the meter definition. If the password exchange is ok, the meter accepts the hand held unit- it is “signed on.

List of International Electrotechnical Commission standards. After signing on, the hand held unit generally reads a meter description. Use British English Oxford spelling from December Iec 62056 page was last edited on iec 62056 Januaryat If the parameter required is in no security group, just a get.

Other IEC parts deal with Electricity metering – Data exchange for meter reading, tariff and load control. It is one part of the identification of the object. By using this site, you iec 62056 to the Terms of Use and Privacy Policy.

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