Type:Logic ICs
Condition:New
1, ask: what is the MBUS interface? Answer: MBUS is the 2 line of the European standard two bus, mainly used for consumption of measuring instruments such as heat meter and water meter series. 2, Q: what is the difference between the MBUS interface and the 485 interface? A: at present, the 485 interface is still the industry's most commonly used bus communication mode, but the 485 way can not be supplied to the next device, the device needs to be addressed separately Power supply problem,Therefore, the common two wire instruments are MBUS instruments, 4 wire instruments are more than 485 table. 3, Q: what is the advantage of the MBUS interface compared to the 485 interface? A: first, the equipment capacity of the MBUS interface is greater, generally can reach more than 200, compared to 485 of the theoretical capacity of 128, there is a significant advantage. Secondly, MBUS does not divide positive and negative polarity, and can provide power for low power equipment, wiring cost is more economical. In addition, the 485 interface wiring should be strictly abide by the "hand in hand" connection mode, and the MBUS interface can tree or star connection, construction more convenient. Finally, MBUS communication distance farther, 1000 meters distance to be able to stabilize the communication, communication speed, very suitable for buildings and other complex environment under centralized meter reading. 4, ask: how to distinguish the MBUS interface of the master station and slave station? A: the general consumption of the instrument are MBUS from the station, from the station itself has no power supply interface, its internal battery or no power supply part,Common market Two wire water meter,Heat meters are MBUS from the station equipment.The main station module needs external power supply, so there is a power interface,At the same time, the connection concentrator, The 485 interface module of the computer should be MBUS master station. 5, ask: your company module can take how many from the station? A: I have a variety of MBUS converter, applicable to a variety of occasions, there are large load module, load current 500 mA, according to the estimate from the station each 1.5 ma, Can take more than 300 from the number of stations;But the current consumption of MBUS from the station is not 1.5 Ma, the actual load quantity, need to see the meter consumption current size. 6, ask: MBUS agreement and MODBUS agreement how to distinguish? A: the MBUS protocol is the physical layer protocol, and the MODBUS protocol is the application layer protocol; Popular terms, MBUS is a highway, MODBUS is the car, the 485 interface can be understood as the ordinary highway,Car can go up highSpeed, Can also be inordinaryHighway driving. Water meter and heat meter on the CJ188 agreement and MODBUS similar, but also a car. Product performance profile: MBUS master converter, TTL serial port, can be directly connected to the microcontroller, microcontroller, equipment size is only 5*6 cm, easy to embedded devices, commonly used in hand-held machine. Load current up to 500 mA, the number of connections from the station over 300. TTL interface compatible with 5V and 3.3V level! 1.Hardware transparent transmission, signal zero delay, to adapt to the domestic and foreign MBUS equipment, transmission performance is stable and reliable; TwoIndustrial grade materials, all SMT processing; ThreeSupport the use of multiple devices in parallel, a substantial increase in load capacity; FourThe baud rate of the full range of support, without setting, automatic adaptation; The 5 module has a low power consumption mode, the extension of the instrument and module life 6 module with automatic power off function, no data communication, 5 minutes after the cut off MBUS power supply(to be specified in the purchase) Technical parameter: 1, power supply voltage:DC 12-24V 2, serial mode:TTL serial port, compatible with 5V and 3.3V level 3, communication baud rate:600-9600bps 4, load capacity:500 mA load current, over 300 from the station. 5, the size of the shape:115mm*70*25 6, working temperature:-10--70 C 7, working humidity:5%~95% no condensation 8, quality assurance time:1 years
