ProSoft Technology MVI56E-MCM User Manual

MVI56E-MCM ♦ ControlLogix Platform Configuration as a Modbus Master
Modbus Communication Module User Manual
ProSoft Technology, Inc. Page 55 of 209
Based on the IntAddress and the configuration within the
MCM.CONFIG.MODDEF section for WriteStartReg and WriteRegCount, the data
from the tag MCM.DATA.WRITEDATA[0] TO [6] will be written to Modbus
addresses 47001 to 47007 of the Slave device node #1.
Note: A swap code may be required to put the data in the proper format for the Slave device.
2.5 Command Control and Event Command
You can use Command Control and Event Commands in Modbus Master mode
to change the command execution based on some conditions in ladder. The
module goes through the command list sequentially. For example:
 The module executes MCM.CONFIG.PORT1MASTERCMD[0]
 After completing that command, it will then execute
MCM.CONFIG.PORT1MASTERCMD[1], then
MCM.CONFIG.PORT1MASTERCMD[2], and so on.
You can use Command Control and Event Command to issue a command at the
top of the command queue, interrupting the regular command list execution.
You would typically use Command Control and Event Command to
 issue a reset to a device on a once a day basis
 poll for end of hour data
 issue special commands on the startup of a process or the changing of a
batch
Important: Because these special command blocks will interrupt the normal polling list, you should
use them sparingly, to avoid interrupting your normal data transfer. Make sure that the data to be
written to the device contains the latest value from the WriteData tag that corresponds to the
Command Control or Event Command.

ProSoft Technology MVI56E-MCM Specifications

General

Vendor	ProSoft Technology
Model	MVI56E-MCM
Category	Control Unit
Product Type	Communication Module
Communication Protocol	Modbus
Compatibility	Allen-Bradley ControlLogix
Backplane Compatibility	ControlLogix
Relative Humidity	5 to 95% non-condensing
Number of Modbus Ports	1
Serial Port Type	RS-232/RS-485
Operating Temperature	0 to 60°C (32 to 140°F)
Storage Temperature	-40 to 85 °C
Module Type	Communication Module
Backplane Current Draw	800 mA @ 5V DC

Summary

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Content Disclaimer

Important Safety Information

North America Warnings

Specific safety warnings for operating in North American hazardous locations.

ATEX Warnings and Conditions of Safe Usage

Safety guidelines for use in ATEX-certified hazardous locations.

Battery Life Advisory

Information regarding the module's rechargeable battery and its operational life.

1 Start Here

System Requirements

Minimum hardware and software components needed for module installation and operation.

Deployment Checklist

Questions to consider before configuring the module for project deployment.

Package Contents

List of components included with the MVI56E-MCM module for installation.

Setting Jumpers

Instructions on configuring serial communication mode using module jumpers.

Installing the Module in the Rack

Step-by-step guide for physically installing the MVI56E-MCM into a ControlLogix chassis.

Creating a New RSLogix 5000 Project

Procedure for setting up a new project in RSLogix 5000 for the module.

Import the Ladder Rung

Steps to import the necessary ladder logic into the RSLogix project.

Adding Multiple Modules (Optional)

Instructions for adding additional MVI56E-MCM modules to an existing project.

2 Configuration as a Modbus Master

Overview

Introduction to configuring the module as a Modbus Master device.

ModDef Settings

Configuration of module's data registers for master communication.

Master Command Examples

Illustrative examples of configuring Modbus master commands.

Floating-Point Data Handling (Modbus Master)

Methods for reading and writing floating-point data in Modbus master mode.

Command Control and Event Command

Using commands to control or interrupt normal polling sequences.

3 Configuration as a Modbus Slave

Overview

Introduction to configuring the module as a Modbus Slave device.

ModDef Settings

Configuration of module's data registers for slave communication.

Slave Configuration

Parameters for configuring the module as a Modbus Slave.

Floating-Point Data Handling (Modbus Slave)

Methods for handling floating-point data in Modbus slave mode.

Read and Write Same Modbus Address (Pass Through)

Using Pass-Through mode for direct processor access.

4 Verify Communication

Verifying Master Communications

Methods for checking successful Modbus Master communication.

Verify Slave Communications

Methods for checking successful Modbus Slave communication.

5 Diagnostics and Troubleshooting

Ethernet LED Indicators

Status indications provided by the module's Ethernet port LEDs.

Troubleshooting the LEDs

Steps to resolve issues indicated by module LEDs.

Setting Up ProSoft Configuration Builder

Guide to installing and configuring ProSoft Configuration Builder software.

Connecting Your PC to the Module

Procedures for establishing PC connectivity to the module.

Downloading the Project to the Module

Steps to download configured project files to the module.

Using the Diagnostics Menu in ProSoft Configuration Builder

Navigating the Diagnostics menu within ProSoft Configuration Builder.

Reading Status Data from the Module

Methods for retrieving operational status data from the module.

Configuration Error Codes

Understanding error codes related to module configuration.

6 Reference

Product Specifications

Technical details and features of the MVI56E-MCM module.

Functional Overview

Detailed explanation of the module's functionality and operation.

Cable Connections

Information on connecting serial and Ethernet cables to the module.

MVI56E-MCM Database Definition

Mapping of the module's internal database registers and their content.

MVI56E-MCM Configuration Data

Details on configuration parameters available for the module.

MVI56E-MCM Status Data Definition

Definition of status data fields transferred from the module.

MVI56E-MCM User Defined Data Types

Description of user-defined data types used in module operations.

Modbus Protocol Specification

Reference information on supported Modbus protocol commands.

Using the Optional Add-On Instruction

Guide on utilizing optional logic for Ethernet and clock configuration.

7 Support, Service & Warranty

Contacting Technical Support

Information and procedures for contacting technical support.

Warranty Information

Details regarding the product's warranty terms and conditions.