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Industrial Communication Networks

General features of the network communications industry.
The network communications industry is the ability to link large numbers of devices together through a single transmission network. Improve the reliability and accuracy of the information. With the conventional method of electrical signals similar to many changes in the content of the information that the device is no way to identify. But conventional methods for information online but little misleading networking equipment is also capable of self-error detection, fault diagnosis.

Improve flexibility, open features of the system. Network system according to international standards so easy to use devices of other manufacturers. The equipment replacement, upgrade and expand the functionality of the system is also much easier.

Industrial network diagnostic capabilities, relocation and breakdown of the devices in the network. The device can transmit data and diagnostic parameters, status, process data to the network stations and the station may be able to one another realm.

Able to expand with new applications of the system by applying knowledge of automation, distributed control, distributed control to field devices.

The system has the ability to control information to monitor the status of the process of operating the device through the computer network as well as using the touch screen.

Configuring the network industry.

The network was built in industrial automation technology department of the college is a power supervisory control system.

The system includes computer ethernet network, connect to the master plc (CJ1M) and the dependent station (slave PLC, the module in the distribution, frequency, boot) through the DeviceNet network. and is divided into the following experimental goals:

• PLC master table experiments: CJ1M-CPU21.

• PLC slave test table: CPM1A.

• Talk ZEN experiments.

• Discuss test signal input / output distribution: GT.

• Discuss test frequency: 3G3MV.

• Discuss the experiment from the start.

• Discuss experimental touch screen monitor.

Network system is divided into two main levels:

+ Level control and monitoring by computer including 06 sets of computer ethernet connection to each other. The machines installed software for motion control and monitoring. At each machine can control and direct supervision at each table experiments.

+ School Supply bus (DeviceNet): used to collect data and control devices on each table experiments. DeviceNet is a distributed network that features open, that is likely to expand or add more devices compatible with various devices.

The data information is transferred between two high-level network through a master PLC (CJ1M) to the station equipment.

Function of network industries

Industrial networks perform programmed functions, control, communication control data to control devices and simulation models, set the device parameters and addresses of individual goals and experimental process operation of the system is monitored by a system of networked computers noise level on the level of communication via the PLC or monitoring station and control via touchscreen.

Students will learn and practice programming PLC (CJ1M, CPM1A) and programming practice in CX-ONE software on your computer, and data transfer control device to the lower level serving as the inverter, the the 3-phase AC or signal simulator. The first goal of the defense industrial network that carried out many problems in the network controller, the observer status of each table experiment through simulations and a signal typical of engines and research development model with close control of industrial controls, especially in the electricity sector.

Thus, prevention of industrial network will achieve dual objectives clear:

• Get familiar with the CX-ONE software, the OMRON PLC programming typically CJ1M line, and ZEN CPM1A.

• Practice networking industry.