Introduction to Explicit Messaging

Overview

The BMENOP0300 module supports through the protocol. Modbus TCP: Use the DATA_EXCH function block or WRITE_VAR and READ_VAR function blocks in application logic to create a Modbus TCP explicit message.

NOTE: A single Control Expert application can contain more than 16 explicit messaging blocks, but only 16 explicit messaging blocks can be active at the same time.

This chapter describes how to configure Modbus TCP explicit messages through these mechanisms:

DATA_EXCH function block (in application logic)
Control Expert interface

explicit messaging

TCP/IP-based messaging for Modbus TCP . It is used for point-to-point, client/server messages that include both data (typically unscheduled information between a client and a server) and routing information.