plug in terminal block Suppliers

it is often around plug in terminal block Suppliers or below. 3. The RS-485 interface is a combination of balanced driver and differential receiver, which has good anti-noise interference. 4. The standard value of the maximum transmission distance of the RS-485 interface is 1200 meters (at 9600 bps), which is actually up to 3000 meters.

The RS-485 interface allows the connection of up to 128 transceivers on the bus, that is, the RS-485 has multiple Machine communication capability, so that users can use a single RS-485 interface to easily establish a device network. Because the RS-485 interface has good anti-noise interference, long transmission distance and multi-station capability, the above-mentioned advantages make it the preferred serial interface. Because the half-duplex network composed of RS485 interface generally only needs two signal wires, the RS485 interface adopts shielded twisted pair transmission.

The international standard of RS-485 does not stipulate the interface connector standard of RS485, so you can use terminal blocks or connectors such as DB-9 and DB-25. The Boss RS-485 interface is a de facto industry standard. 5. When using the RS485 interface, how to consider the length of the transmission cable? Answer: When using the RS485 interface, for a specific transmission line, the maximum cable length allowed for data signal transmission from the generator to the load is a function of the data signal rate. This length data is mainly limited by the influence of signal distortion and noise. .

The relationship curve between the maximum cable length and the signal rate is obtained when a 24AWG copper-core twisted-pair telephone cable (with a wire diameter of 0.51mm) is used, the bypass capacitance between the lines is 52.5 PF/M, and the terminal load resistance is 100 ohms. (Quoted from Appendix A of GB11014-89). When the data signal rate drops below 90Kbit/S, assuming the maximum allowable signal loss is 6dBV, the cable length is limited to 1200M. In fact, it is completely possible to obtain a larger cable length in practical use. When using cables with different wire diameters.

 

 

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