Task Management

This topic explains implicit I/O and the relationship between the task configuration and the RIO implicit exchanges.

Implicit messaging maintains open connections for real-time communications of a predefined nature between consumers and producers. Implicit I/O exchanges contain control data and a connection identifier.

EtherNet/IP uses the TCP/IP and UDP/IP protocols to implement implicit messaging.

M580 Implicit Messaging Communication Parameters

M580 implicit messaging communication parameters are automatically configured when you add a module to a project. To complete the configuration of implicit I/O exchanges to RIO modules, you need to assign a task to each I/O module. The availability of tasks that you can assign to a module – MAST, FAST, AUX0 or AUX1 – depends on:

• the location of the module (i.e. if it is placed on a local rack, is part of an RIO drop, or is a distributed device), and

• the tasks supported by the adapter module used in an RIO drop.

Access the MAST Configuration

To view the Properties of MAST:

Access the FAST Configuration

To view the Properties of FAST:

Access the AUX0 Configuration

To view the Properties of AUX0:

Access the AUX1 Configuration

To view the Properties of AUX1:

Periodic and Cyclic Modes

The effect that periodic and cyclic modes have on implicit I/O is explained in the description of the connection parameters.

I/O Management for Implicit I/O Exchanges

There are no state RAM addresses for (e)X80 I/O modules in RIO drops in an M580 system.