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The MELSECNET/H network unit lets you build a large-scale, flexible network system.
A MELSECNET/H network system may be a PC-PC network for communication between an administration station and a normal station, or a remote I/O network for communication between a remote master station and a remote I/O station.
Optical loop system: High-speed communication at 10 Mbps / 25 Mbps is achieved. To support a long distance between stations / long total distance, the noise resistance is high.
Coaxial bus system: A system can be built with lower cost than what an optical loop system needs because inexpensive coaxial cables are used.
Twist bus system: A low-cost network system can be built by combining affordably-priced network units and twisted paired cables.