1.1 Overview of Fieldbus I/O
The Fieldbus I/O option is an integrated I/O system that supports the following Fieldbuses:
Fieldbus is a standard of signal communications between field devices operating in a
factory (sensor, actuator, robot controller, etc.) and controller (PLC or robot controller)
using serial communications. Compared to signal communications using analog signals,
Fieldbus has the following features:
Access to signals from multiple devices and multiple data from each device using one
Precise signal transmission since there is no need for A/D conversion and D/A conversion.
Less wiring costs, including signal relay board costs and installation area due to several
dozen (or a hundred) devices connected on one Fieldbus.
More flexible modification and expansion of a system because multiple devices are simply
added to one Fieldbus without additional wiring.
Slave devices can transmit self-diagnostics information.
The Fieldbus master function can be added to the RC620 robot controller by installing the
Fieldbus master board. Each type of Fieldbus supports the following boards.
DeviceNet master board
PROFIBUS-DP master board
EtherNet/IP master board
You can install one Fieldbus master board per controller. To use the Fieldbus master I/O,
the Fieldbus master option of the EPSON RC+ software options key must be enabled.
RC620 Option Fieldbus I/O Rev.8
Sample Parallel Connection
Sample Fieldbus Connection