Type:Logic ICs
Condition:New
Model:TTL-MBUS
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TTL to MBUS, serial port to MBUS host module
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Note: the module circuit includes all the upgrade, parameters, interfaces and dimensions of the device.AppearanceExactly the same, the latest version of the module is not uploaded!
Brief introduction:
TTLturnMBUSMaster module and serial portMBUSMain module, applied to water, gas, heat, and table.MBUSMeter reading module, input wide voltage range 5V-15V, compatible with a variety of TTL levels, TTL level can be set, bus short circuit protection, short circuit can be self recovery, short circuit protection under ultra low power consumption.
The module is compatible with various TTL levels, and can be applied to other modules such as wireless RF to MBUS module, GPRS to MBUS, 485 turn MBUS and so on.
Module export to EuropeThe Middle East and other regions are often used in wireless RF to MBUS, GPRS to MBUS, 485 to MBUS and other applications.
Note: the latest version of the module is slightly different from the picture, and the parameters / sizes / interfaces are exactly the same.
Characteristic:
1Compatibility3.3V,5VTTLLevel, level voltage can be set!
2, bus output short circuit protection, short circuit state indication output, bus short circuit self recovery!
3Conforms toMBUSInternational standards and international standards!
4Small size, low space cost, easy to install!
5, the system is completely shielded, the communication is stable and reliable, and has a better EMC!
6, communication baud rate 300-9600 can be adapted! With the limit of communication from our machine module, the baud rate is up to 38400 without error.
7. Data communication within the rated load range is not spontaneous.
8, no data spontaneous self collection phenomenon!
Note:After the module is short circuited, the bus is automatically turned off, the bus is ultra-low power consumption, and the module automatically detects whether the bus is short circuited, and it can automatically recover.
Interface Description:
1, VIN: the power input port 5V-15V, the absolute maximum voltage should not exceed 18V, otherwise the module will be damaged.
2, GND: systematic
3.RXD: Connect external serial port (external device) RXD, high level
4, TXD: external serial port (external device) TXD, need external high.
5.OVERLOAD: short circuit indicator output, default high level, short circuit to low level, can be suspended.
6, TTLVCC:TTL level voltage input can not be suspended, must input TTL level voltage.
7. M: MBUS Bus Interface, Initial High Level 30 +1V(customizable)
Note:
1.When TTLVCC is input to 3.3V, the TTL signal is 3.3V;
When TTLVCC enters 5V, the TTL signal is 5V; input the other TTL is the input level signal.
2. The input voltage of TTLVCC should not exceed the input voltage of VIN.
Other parameters:
Input voltage VIN:Power input port 5V-15V, absolute maximum voltage should not exceed 18V
Load capability: Module can be loaded with 12 standard MBUS slaves
Antistatic ability: + 12KV
Working temperature: -25~75 C
Storage temperature: -30~80 C
Recommended design:
The bus is connected to ground 1 to 2.2nF. According to the field application, the capacitance can be appropriately increased, and the maximum value can not exceed 10nF.
VIN input electrolytic capacitor 10 to 100uF electrolytic capacitor, capacitor withstand voltage is selected according to VIN value.
