What type of network allows a PLC to communicate with a PC if it lacks an Ethernet module?

In scenarios where a Programmable Logic Controller (PLC) lacks an Ethernet module, a USB network provides a viable alternative for communication with a PC. USB (Universal Serial Bus) connections are commonly employed to establish direct connections between devices, offering a straightforward method for data transfer and communication.

A USB network enables the PLC and PC to communicate without requiring additional network infrastructure or complex setups. This type of connection is particularly advantageous for configuration, programming, and monitoring tasks, as it typically provides a plug-and-play capability that is user-friendly and efficient. The direct connection also allows for reliable and high-speed data transfer, making it an effective choice for communication when Ethernet options are not available.

Other types of networks, such as wireless, point-to-point, or integrated networks, may involve different configurations or equipment that might not be necessary or practical in cases where a simple and direct connection suffices. Hence, USB networks stand out as an effective solution for enabling direct communication between a PLC and a PC.