Epson EM07ZS1647F manual Overview of DeviceNet, Features of DeviceNet

1. Introduction

1.2 DeviceNet

Overview of DeviceNet

DeviceNet is a fieldbus network that provides easy interconnection between control devices (PLC, PC, sensor, actuator, etc.).

DeviceNet was developed by Allen-Bradley as an open communication standard to connect various field devices (sensor, actuator, robot controller, etc.). Because of the open communication standard, DeviceNet users can easily construct a multi-vendor system with various devices developed around the world.

Controller

DeviceNet Network

			Photo Sensor		Analog Device
			from Company E		from Company G
Motor Driver	Motor Driver	Intelligent I/O	Intelligent I/O		HMI Device
from Company A from Company B		from Company C	from Company D	from Company F

Features of DeviceNet

Reduced Wiring

Compared with parallel wiring, DeviceNet employs a dedicated 5-wire cable (signal wires and power wires) which substantially reduces the number of necessary wires, wiring time and cost.

Detachable communication connectors provide you with simple wiring between nodes and easy network separation or reconstruction.

Specified environment-resistance cables allow you to construct an environment-resistant system at low cost.

Open Standard (Multi-vendor)

Due to an open communication standard, various devices from many manufacturers are available. Standardized communication connectors provide you with easy network construction.

The maintenance spare parts stored on site (factory, etc.) can be reduced because different manufacturers’ devices are used in case of a breakdown. Similar products are available around the world due to a global standard DeviceNet.

Large Numbers of Inputs/Outputs

For EPSON RC+ standard I/O and expansion I/O, the number of inputs/outputs is limited to 512 inputs and 512 outputs. When configuring a device to be a master of fieldbus I/O, you can control more than 16,000 total inputs and outputs.

For a slave device, 2,040 inputs (255 bytes) and 2,040 outputs (255 bytes) are available.

2 Fieldbus I/O Rev.6