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1. What is MBus interface?
Answer: MBus is a standard 2-wire 2-bus, mainly used for consumption measuring instruments such as heat meter and water meter series.
2. What is the difference between MBus interface and 485 interface?
Answer: at present, 485 interface is still the most commonly used bus communication mode in the industry, but 485 mode can't power the next equipment, which needs to be solved separately
Electricity,Therefore, the common two-wire instruments are MBus instruments, and most of the four wire instruments are 485 meters.
3. Q: what are the advantages of MBus over 485?
Answer: first of all, the equipment capacity of MBus interface is larger, generally more than 200. Compared with the theoretical capacity of 485, it has significant advantages.
Secondly, MBus can provide power supply for low-power equipment, and the wiring cost is more economic.
Moreover, 485 interface wiring should strictly follow the "hand-in-hand" wiring mode, and MBus interface can be connected in tree or star shape, so the construction is more convenient.
Finally, MBus has a long communication distance, 1000 meters distance can stabilize communication, and the communication speed is fast, which is very suitable for centralized meter reading in complex environments such as buildings.
4. Question: how to distinguish master station and slave station of MBus interface?
Answer: generally, the consumption meters are MBus slave stations, which have no power interface, battery or no power part,Common on the market
Two wire water meter,The heat meters are MBus slave equipment.The main station module needs external power, so there is a power interface,At the same time, connect the concentrator,
The 485 interface module of the computer should be MBus master station.
5. Q: how many slave stations can your module take?
Answer: our company has many MBus converters, which are suitable for many occasions. There are large load modules, and the load current is 500mA, estimated by 1.5mA for each slave station,
The number of available slave stations exceeds 300;But the current consumed by MBus slave station is not all 1.5mA. The actual load quantity depends on the current consumed by the instrument.
6. Question: how to distinguish MBus protocol and Modbus Protocol?
Answer: MBus protocol is physical layer protocol, while Modbus protocol is application layer protocol;
Generally speaking, MBus is highway, MODBUS is automobile, 485 interface can be understood as ordinary highway,The car can go up highSpeed,
You can alsoGeneralDriving on the road. Cj188 protocol on water meter and heat meter is similar to modbus, and it is also a kind of automobile.
Product performance introduction:
1. Transparent transmission of hardware, zero delay of signal, suitable for multiple MBus equipment at home and abroad, stable and reliable transmission performance;
2. Industrial grade materials, all;
3. Multiple devices are used in parallel, greatly improving the carrying capacity;
4. Baud rate full range, no need to set, automatic adaptation;
5. The module has low power consumption mode to extend the service life of instrument and module
6. The module has the function of automatic power-off. When there is no data communication, cut off the MBus power after 5 minutes
(to be noted when purchasing)
7. The module is equipped with 5V DC voltage output capacity, with electrical capacity of more than 1a, which can be used for external 5V equipment
Technical parameter:
1. Electric voltage: DC 12-24V
2. Serial port mode: RS485 / RS232
3. Communication baud rate: 600-9600bps
4. Load capacity: 500 mA load current, over 300 slave stations.
5. Boundary dimension: 115mm * 70 * 25
6. Working temperature: - 10-70 ℃
7. Working humidity:5% ~ 95% no condensation
8. Warranty period: 1 year
Our company specializes in MBus bus promotion and develops various types of bus level to MBus, such as 485 / 232 / USB to MBus converter,Products with its excellent
Quality and advanced performance leadingMBUSIndustry, weM-BUS/MBUSThe measurement and acquisition system ofThere are complete solutions independently developed,
Including all mature softComponents and hardware, and provide a full range ofM-BUS/MBUSconverterWith the collector. Remote meter reading system for youProblems in.
Welcome to our website: www.sh-mbus.top
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