Industrial Modem Selection Guide

In the field of industrial Internet of Things, industrial Modem, as a bridge connecting the digital world and the physical world, requires comprehensive consideration of multiple factors during the purchase process to ensure that it can meet various needs in practical applications. The following is a professional guide to selecting industrial modems for those who need networking applications, covering essential features and performance indicators.

1. Essential functions

High-speed data transmission:

Industrial Modem should have a high data transmission rate to meet the demand for real-time transmission of large amounts of data in industrial IoT applications. The upload speed of mainstream products on the market can reach 48Kbps and the download speed can reach 56Kbps, but it is necessary to weigh the specific application requirements when purchasing.

Stability and reliability:

The industrial environment is complex and changeable, so industrial modems must have good stability and reliability. When selecting, it is important to consider whether it has anti-static, anti-interference, moisture-proof, and other features, as well as automatic reset and watchdog functions, to ensure that it can still work normally in harsh environments.

Rich communication protocol support:

Industrial Modem should support multiple communication protocols, such as ITU-T V.90, V.34, V.32bis, etc., to be compatible with different communication devices and networks. At the same time, fax protocols and data compression protocols should also be supported to meet various data transmission requirements.

Strong error correction and flow control capabilities:

During data transmission, industrial Modem should have strong error correction capabilities, such as V.42 LAPM and MNP 4~2 error correction protocols, to reduce data transmission errors. In addition, software XON/XOFF or hardware RTS/CTS flow control methods should also be supported to ensure smooth data transmission.

Smartphone interface and fax function:

The industrial Modem should be equipped with an intelligent telephone interface, such as the RJ-11 standard telephone interface, and support G3 fax functionality. This is especially important for application scenarios that require simultaneous voice calls and data transmission.

2. Performance Metrics

Transmission rate:

The transmission rate of an industrial Modem is one of the important indicators to measure its performance. The higher the rate, the shorter the time the telephone line is occupied during communication, and the higher the data transmission efficiency. When selecting, one should choose the appropriate transmission rate based on the actual application requirements.

Anti-interference capability:

There are many electromagnetic interferences in industrial environments, so industrial modems should have strong anti-interference capabilities. This can be achieved by choosing products with high-quality main control chips and circuit designs.

Compatibility:

Industrial Modem should have good compatibility and be able to accommodate different operating systems and communication devices. When choosing, you should pay attention to whether it supports PNP function and whether it provides drivers for different operating systems.

Physical properties:

The physical characteristics of industrial Modem are also one of the factors to be considered when purchasing. For example, its size, weight, installation method, etc. should meet the needs of the actual application scenario. At the same time, it should also pay attention to whether it has parameters protection functions such as lightning protection, high current, and high voltage to ensure safety in harsh environments.

After-sales Service:

When purchasing an industrial Modem, you should also pay attention to its after-sales service quality. Choosing a supplier with a good after-sales service system and technical support capabilities can ensure that problems encountered during use can be resolved in a timely manner.
The process of selecting an industrial Modem requires a comprehensive consideration of multiple factors, including essential functions and performance indicators. By carefully comparing the characteristics and application scenario requirements of different products, you can choose the most suitable industrial Modem for your application, providing strong support for the successful implementation of industrial IoT applications.