HELUKABEL'S RS485 SIGNAL CABLES

RS485 (also known as TIA-485 (-A) or EIA-485) is the name of a connection standard using signal transmission cables between devices, computers, PLCs, etc., allowing the system to receive information, monitor, and remotely control devices.

RS485 is known as the communication standard for a communication bus used to create simple networks of multiple devices. RS485 allows users to connect up to 32 devices on a pair of conductors and a ground wire, with a transmission distance of up to 1200m.

RS485 enables wide-ranging communication over long distances, ensuring the stability and accuracy of the signal. Therefore, in practice, RS485 is widely used as a protocol for POS, industrial, and telecommunications applications.

What is rs485 cable? Structure of rs485 signal cable

Rs485 cable is essentially a signal cable with a twisted pair structure, additionally shielded with 2 layers of noise protection used in industrial communication. Rs485 cables not only vary in the structure of the core but also in the number of twisted pairs. To minimize the impact of inteference during signal transmission, this type of cable is designed with the following physical structure:

• Twisted pair structure: Rs485 anti-interference cable has a twisted pair conductor structure. This helps to minimize the impact of electromagnetic interference, causing the voltage between the two wires to deviate.
• Anti-inteference layer: Rs485 cables are designed with 2 anti-inteference layers to shield the internal conductors. The outer layer of aluminum foil covers the entire conductive core, serving to counteract high-frequency interference. In addition, the braided layer consisting of many small, tinned copper wires acts to counteract low-frequency interference. This ensures maximum protection for the inner core.
• Insulation/separator layer: This layer plays a role in insulation and enhances the durability and lifespan of the cable. Cross-linked polyethylene (XLPE) or Polyvinyl Chloride (PVC) is the material used for this layer.
• Cable jacket: Made from high-quality PVC, the outermost jacket layer has high elasticity, helping to protect the cable from strong environmental impacts.

Applications of rs485 signal cable

Rs485 signal cables are applied in various fields:

• Control and monitoring systems: A single pair of rs485 signal cable can connect up to 32 devices, with a signal transmission distance of up to 1200m. Therefore, using rs485 cables is an ideal choice for industrial control and monitoring systems, especially those with large-scale and high dispersion.
• Alarm systems: Rs485 cables in alarm systems help transfer alarm signals and information from alarm devices to the control center. This ensures that all security-related information and incidents are transmitted quickly and with high reliability.
• Access control systems: Rs485 cables are mainly used to connect and transmit data between access control devices such as security gates, RFID cards, or time attendance machines and the control center. Stable connections play a crucial role in managing and controlling access to secure areas, optimizing system performance.
• Industrial automation systems: In the industrial automation sector, rs485 signal cables play a vital role in connecting and remotely controlling motors. This includes speed control using Variable Frequency Drives (VFD) or inverters, as well as controlling simple PLC and HMI network systems. PLC systems are used to monitor and control operations, while HMI network systems allow interaction with machinery and control them.

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