Mitsubishi PLC's network structure - Solutions - Huaqiang Electronic Network

RF cable can be customized for other specifications

EL-C1600N100013-B

Mitsubishi's plc network inherits the traditional MELSEC network and makes it superior in terms of performance, functionality, and ease of use. Q series PLC provides a clear three-layer network, providing the most suitable network products for various purposes. (1) Information layer / Ethernet (Ethernet) The information layer is the highest layer in the network system, mainly in PLC, device controller Data such as production management information, quality management information, and equipment operation are transmitted between PCs for production management. The information layer uses the most common Ethernet. It can not only connect PCs of WINOOWs system, workstations of UNIX systems, etc., but also connect various FA devices. The Ethernet module of the Q series PLC series has an increasingly popular Internet e-mail transceiving function, enabling users to easily send and receive production information e-mails anywhere in the world to build a remote monitoring and management system. At the same time, the FTP server function of the Internet and the MELSEC-specific protocol can easily implement program upload/download and information transmission. (2) Control layer/MELSECNET/10(H) is the middle layer of the entire network system, and it is a control network that facilitates and high-speed processing of data exchange between PLCs and CNCs. MELSECNET/10, as the MELSEC control network, has achieved high market evaluation with its good real-time performance, simple network setting, non-program network data sharing concept, and redundant loop. The number of devices used is Japan has reached its highest level and is one of the few in the world. MELSECNET/H not only inherits the excellent features of MELSECNET/10, but also makes the network more real-time and has more data capacity to further adapt to the needs of the market. However, currently MELSECNET/H is only available for Q series PLCs. (3) Device layer/field bus CC-Link device layer is a field network that connects PLC and other control devices with sensors and drive devices, and is the lowest layer network of the entire network system. With CC-Link fieldbus connection, the number of wires is greatly reduced, improving system maintainability. Moreover, not only ON/OFF and other switching data, but also intelligent systems such as ID systems, barcode readers, inverters, and human-machine interfaces can be connected, from the completion of various data communication to the management of terminal production information. The realization, coupled with the centralized management of the machine's operating state, has greatly improved the efficiency of maintenance. Used in Q series PLCs, CC-Link has better functions and is easier to use. When communicating in Mitsubishi's PLC network, you will not feel the difference and discontinuity of the network type, and can perform data communication and remote monitoring, modification, debugging, etc. between the networks without considering the network hierarchy and type. . MELSECNET/H and CC-Link use cyclic communication to automatically and periodically send and receive information. No special data communication program is required, and simple parameter setting is required. MELSECNET/H and CC-Link use the broadcast method for cyclic communication transmission and reception, so that data sharing on the network can be achieved. For Ethernet, MELSECNET/H, and CC-Link networks used in Q series PLCs, network parameters and various functions can be set on the GX Developer software screen, which is simple and convenient. In addition, in addition to the network mentioned above, Q series PLC can also support networks of other manufacturers such as Profibus, Modbus, Devicenet, ASi, etc., and can also perform serial communication such as RS-232/RS-422/RS-485. , a variety of communication methods such as data transmission through data lines and telephone lines.