Network designers know that the RS-485 standard has a good history of achieving robust and reliable communications and has thus become the recommended standard for multipoint differential data transmission in industrial networks. Although the RS-485 standard has stood the test of time, as the system or other elements of the network have changed, RS-485 transceivers are constantly evolving to meet these needs. Modern networks are usually a combination of control systems and data links, and various requirements will change as applications change.
With more and more network requirements, many equipment manufacturers require control channels to not only travel farther in the network, but also send high-speed data over the network. The RS-485 bus standard supports data transmission distances of up to 4000 feet (1200 meters), but the maximum data rate cannot be achieved with the maximum cable length: the longer the cable, the slower the data rate.
For applications that require synchronous (parallel transceiver) signal timing, that is where optional data rates can intervene to save the situation. You do not need to choose between cable length and data rate. After qualifying the SN65HVD01 optional data rate transceiver, designers can find common ground between distance and speed. The programmable logic controller (PLC) designer can use the SN65HVD01 transceiver to send control information up to 250kbps to remote IO modules within the plant that are up to 1200 meters away from the PLC. Some industrial networks may need more data to move between nodes in the network. The same device can support higher data rates up to 20Mbps by using the slew rate selection feature.
In addition, reducing the power consumption of these networks is also becoming increasingly important. The extremely low standby current that can be connected to 3.3V or 1.8V FPGAs or microprocessors not only helps achieve lower system power consumption, but also reduces high-cost level translators.
The upgrade is also very convenient. Modern transceivers are not only well-designed, backward compatible with the basic RS-485 transceiver, but also provide greater flexibility and robustness. The SN65HVD01 is one of the many devices in the RS-485 transceiver family that supports IEC ESD protection - now with high flexibility! If the transceiver is a car on the RS-485 bus, it can be seen as a fast sports car with hybrid and tank-like protection that will reach the distance you need to reach.
What makes your RS-485 system in trouble? Can the optional data rate help?
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Shenzhen MovingComm Technology Co., Ltd. , https://www.movingcommiot.com