Introduction

M580 Architecture - Modicon M580 Typical System Introduction

A typical Modicon M580 system is designed and tested for simultaneous use of:

an Ethernet main local rack and the ability to extend to other local racks
RIO drops that support Ethernet and X-Bus communications across the backplane
Ethernet distributed equipment
BMENOS0300 network option switch modules that attach RIO drops and distributed equipment to the M580 system
BMENOC0321 control network module that creates transparency between the device network and the control network
RIO and distributed equipment integrated on the same physical network
RIO and DIO sub-rings that communicate with the RIO main ring
third-party modules and devices
daisy-chain ring architectures provided by communication modules with dual device Ethernet network ports

A typical Modicon M580 system provides automatic network recovery and deterministic RIO performance.

Complex Modicon M580 system incorporate recommended Connexium managed switches and their corresponding predefined configuration files.

These architectures are described in the following documentations:

Using M580 in an Open Ethernet Network

An alternative to typical Modicon M580 system is to design your M580 device network by connecting devices directly to an existing open Ethernet network.

This is possible by using industrial Ethernet managed switches and using the service ports instead of the device network ports for the CPU and RIO adapter modules.

Integrating Modicon M580 system in an open Ethernet network has significant impact in the operation and performance of the connected Ethernet devices. For example, performance metrics such as recovery time is not maintained by design.

This document details the steps needed to ensure M580 system operating in an open Ethernet network.

NOTICE

LOSS OF I/O DATA AND POSSIBLE DISCONNECTION OF RIO DROPS

The precautions and recommendations given in this documentation are provided only to integrate an M580 system in an open Ethernet network.

Do not apply them to a typical M580 system.

Failure to follow these instructions can result in equipment damage.

NOTE: The architectures described in this document have been tested and validated in various scenarios. If you intend to use architectures different than the ones described in this document please contact your local technical support.