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FAQ
What is DLMS meter? &What is DLMS compliant?
DLMS is short for DLMS: Device Language Message Specification. The DLMS / COSEM standard suite (IEC 62056 / EN 13757- 1) is the most widely accepted international standard for utility meter data exchange. This global acceptance is clearly demonstrated by the continued fast growth of the membership of the DLMS User Association...
What is the difference between M-Bus and MODBUS communication ?
M-Bus Communication: M-Bus is a communication protocol used between meters and the central data collection system or Pre-Payment unit. Widely used on new projects where the building infrastructure can be designed accordingly.M-Bus is available on a wide variety of gas, heat, electricity, and cold/hot water meters.
What is Four Quadrant Metrology?
P—active energy; Q—reactive energy; QL—inductive reactive energy; QC—capacitive reactive energy; S—apparent power Forward active power: P=UICOSΦ, where the range of Φ is within ±90°. Reverse active power: P=UICOSΦ, where Φ ranges from 90° to 270° Forward reactive power: P= UISINΦ, where the range of Φ is within 0~180°...
What are the differences between RS232, RS485, RS422 and RJ45 interfaces
RS-232, RS-422 and RS-485 are serial data interface standards.
Frequency Plan of Lorawan (Electricity Meter)
As an lorawan electricity meter factory and supplier, we also learn the frequency plan of countries from the website of the things network, Frequency Plans by Country | The Things Network (for your references)
Undirectional and Bi-directional Meter in Solar System
Previously, IVY have introduced bi-directional meters. Therefore, some customers contact us to know if we have other types of energy meters for solar energy system. The answer is YES. Based on different working way of solar panels, IVY can provide corresponding metering solutions. Let's take a look!