The difference between Ethernet remote IO module and industrial computer IO board

The application of Ethernet remote IO modules is very extensive, mainly used for distributed data acquisition and control, especially suitable for situations where data points are scattered and control points are scattered.

The traditional approach is to connect various instrument signals directly to the IO card through cables using an industrial computer and IO board. This method has high wiring costs and significant signal attenuation.

The Ethernet remote IO module can be directly connected to the PLC or industrial computer through an Ethernet cable, and various instrument controller signals can be directly connected to the Ethernet IO module nearby. This has several benefits:

1. Save industrial control computers and IO boards, Ethernet IO modules can be directly connected to the upper computer system;
2. Replacing 4-20mA signal transmission with 10/100MHz Ethernet transmission has improved transmission speed;
3. Replacing various instrument controller signal lines with an Ethernet cable reduces the attenuation of remote signal transmission;
4. The signal cable of the instrument controller only needs to be connected to the Ethernet IO module, greatly reducing cable costs and wiring workload;