Промышленная сеть DeviceNet

DeviceNet: Optimising industrial networking
DeviceNet is an innovative industrial network system that enables a wide range of devices to be easily networked and managed remotely. Everything - from PLCs and remote I/O, to fibre optic sensors, vision systems controllers, servos and inverters - can be seamlessly integrated into DeviceNet, making it one of the best industrial field busses around. As a founding member of ODVA, Omron is one of the companies that integrates DeviceNet interfaces into its many core products. 
All of Omron’s products are optimised for seamless integration into a DeviceNet system. You can configure Omron’s devices over the network on-the-fly, and add a device or machine to a production line without powering down. DeviceNet is a flexible network, designed to accommodate your growing needs.
Easy to use software
Omron’s DeviceNet configuration software is specially developed to integrate products in a more user-friendly way than in other bus systems. Omron’s DeviceNet units have a default mode that enables you to set the addresses, plug the products in and watch everything run. The configuration software allows you to monitor and fine-tune the DeviceNet products in your network for optimum operation. The products are literally plug-and-play, and the software is drag-and-drop.
Nothing could be easier.
ODVA and Omron –setting the standards DeviceNet is based on open standards and specifications defined
by the Open DeviceNet Vendors Association (ODVA), a consortium whose main task is to promote DeviceNet
world-wide. Omron is a founding member of ODVA and a leading player in promoting DeviceNet, and is dedicated to producing and improving products that work with DeviceNet. All Omron products are ODVA certified, making them fully DeviceNet compatible. Thanks to ODVA’s strong conformance testing policies, DeviceNet also ensures the interchangeability and interoperability of control devices from hundreds of manufacturers world-wide.

Overview of DeviceNet
Two types of communications are supported:
1) Remote I/O communications that automatically transfer I/O between slaves and the CPU Unit to which a DeviceNet Unit is mounted without any special programming in the CPU Unit.
2) Message communications that read/write messages, control operation, or perform other functions for other CPU Units to which a Device- Net Unit is mounted and slaves. Message communications are achieved by executing specific instructions (CMND) from the program in the CPU Unit to which the DeviceNet Unit is mounted. The following functions are supported by a CS/CJ-series DeviceNet Unit.
• I/O area words can be flexibly allocated for remote I/O Master and Slave communication.
• Multiple DeviceNet Units can be mounted on a single PLC. Fixed (automatic) allocations are possible for up to three DeviceNet Units. 
• More than one DeviceNet master unit can be connected to a single network. With the DeviceNet Configurator, remote I/O can be allocated in any order, i.e., not necessarily in the order of node addresses.
Note: When the DeviceNet configurator is connected through a dedicated
Board or Card it uses one node address in the DeviceNet network. It does not use a node address if it is connected
throuogh the serial port of the PLC.
A CS/CJ-series DeviceNet Unit can function as either a master or slave in remote I/O communication. Both can be used simultaneously.
With a CS/CJ-series DeviceNet Unit, the DeviceNet network can be treated exactly like a Controller Link, Ethernet, or other network for message communications or remote programming and monitoring by a CX-Programmer.

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