Implicit Messaging

Introduction

Use to create a communications link between the BMENOC0301/11 on an M580 rack and network devices.

The BMENOC0301/11 module manages the communications link to facilitate the exchange of I/O data between the M580 CPU and Modbus TCP and EtherNet/IP devices on the network. Using the BMENOC0301/11 module as a local slave is another example of implicit messaging.

What Is in This Chapter?

This chapter contains the following sections:

Adding an EtherNet/IP Device to the Network
Adding a Modbus TCP Device to the Network
Configuring the BMENOC0301/11 Module as an EtherNet/IP Adapter
Accessing Device DDT Variables
Hardware Catalog
Managing Connection Bits

implicit messaging

UDP/IP-based class 1 connected messaging for EtherNet/IP. Implicit messaging maintains an open connection for the scheduled transfer of control data between a producer and consumer. Because an open connection is maintained, each message contains primarily data, without the overhead of object information, plus a connection identifier.