10BASE-T1S vs. 4-20mA: Differences, Advantages, and Disadvantages

In modern industrial communications, 10BASE-T1S and 4-20mA are both commonly used transmission technologies, but they each have unique application scenarios, advantages and disadvantages. This article will compare the two technologies in detail to help readers better understand the differences and connections between them.

1.10BASE-T1S Overview

10BASE-T1S is an Ethernet-based physical layer standard designed for industrial automation. It supports 10Mbps data transmission rate on a single twisted pair, suitable for data transmission over long distances and in complex electromagnetic environments. 10BASE-T1S has high-speed, two-way communication capabilities, which can meet the needs of modern industry for real-time performance and data transmission volume.

2. 4-20mA Overview

4-20mA current loop is an analog signal transmission standard widely used in industrial automation. It represents different measurement values ​​or control signals by transmitting 4-20mA current signals in the loop. 4-20mA signal has the advantages of strong anti-interference ability, long transmission distance, easy calibration and maintenance, so it is given priority in many industrial occasions.

3. Differences and advantages

Transmission mode: 10BASE-T1S is a digital communication method based on Ethernet, which supports high-speed, bidirectional data transmission; while 4-20mA is an analog signal transmission method with relatively slow transmission speed but higher stability.

Transmission distance: 10BASE-T1S has certain advantages in long-distance transmission and can meet communication needs in a larger range; while 4-20mA can also achieve long-distance transmission, it is usually limited by line resistance and power supply voltage.

Anti-interference ability: 10BASE-T1S uses advanced coding and modulation technology and has strong anti-interference ability; while the 4-20mA signal itself has a certain resistance to electromagnetic interference, but additional shielding measures may be required in complex electromagnetic environments.

Scalability and flexibility: As a type of Ethernet technology, 10BASE-T1S can be easily integrated with other network devices and systems, and has high scalability and flexibility; while the 4-20mA system usually requires dedicated transmission lines and interface devices, and has relatively poor scalability.

Disadvantages

Cost: 10BASE-T1S technology is relatively new, and the cost of related hardware and network equipment may be high; while 4-20mA technology is quite mature, and the equipment and maintenance costs are relatively low.

Compatibility: Since 10BASE-T1S is an emerging communication technology in recent years, there may be compatibility issues with some older devices; while 4-20mA, as a traditional analog signal transmission standard, has good compatibility with most industrial equipment.

Complexity: 10BASE-T1S involves a relatively complex setup process such as network configuration and IP address allocation, which requires high professional capabilities of technicians; while the 4-20mA system is relatively simple and intuitive and easy to use.

In summary, 10BASE-T1S and 4-20mA each have their own unique advantages and disadvantages. When choosing which technology to use, it is necessary to make comprehensive considerations based on specific application scenarios, cost budgets, and technical requirements. In the future development of industrial communication technology, these two technologies will continue to play an important role and provide strong support for industrial automation and intelligence.