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ProSoft Technology MVI69E-MBTCP User Manual

ProSoft Technology MVI69E-MBTCP
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MVI69E-MBTCP CompactLogix Platform MVI69E-MBTCP Backplane Data Exchange
Modbus TCP/IP Enhanced Communication Module User Manual
ProSoft Technology, Inc. Page 71 of 150
June 28, 2017
In Server Pass-Through mode, write commands from the client are handled
differently than they are in Normal mode. In Server Pass-Through mode, all write
requests are passed directly to the processor and data is not written directly into
the module’s database.
This mode is especially useful when both a Modbus client and the module’s
processor logic need to be able to read and write values to the same internal
database addresses.
The following diagram shows the data flow for a server port with Pass-Through
enabled:
Step
Description
1
Same as normal mode.
2
Same as normal mode.
3
a. In Pass-Through mode, if the Server driver receives a read request, it looks for the
data in module’s internal database, just as it would in Normal mode.
b. The data needed to respond to the read command is retrieved directly from the
internal database and returned to the Server driver so it can build a response message.
c. In Pass-Through mode, if the Server Driver receives a write request, it does not send
the data directly to the module’s internal database. It puts the data to be written into a
special Input Image with a special Block ID code to identify it as a Pass-Through Write
Block and substitutes this special block in place of the next regular Read Data Block. The
special block is processed by the ladder logic and the data to be written is placed into the
WriteData controller tag array at an address that corresponds to the Modbus Address
received in the write command.
d. During normal backplane communications, the data from the WriteData array,
including the data updated by the Pass-Through Write Block, is sent to the module’s
internal database. This gives the ladder logic the opportunity to also change the values
stored in these addresses, if need be, before they are written to the database.
Note: The ReadData array is not used in Pass-Through mode.
4
Same as normal mode.
5
Same as normal mode.

Table of Contents

Questions and Answers:

ProSoft Technology MVI69E-MBTCP Specifications

General IconGeneral
VendorProSoft Technology
Product TypeControl Unit
ProtocolModbus TCP/IP
Ports1 Ethernet port
Operating Temperature0 to 60°C (32 to 140°F)
Storage Temperature-40 to 85°C
Relative Humidity5% to 95% (non-condensing)
CompatibilityCompatible with Rockwell Automation CompactLogix and MicroLogix Controllers
Power Supply24 VDC nominal

Summary

Start Here

System Requirements

Minimum hardware and software components required for the MVI69E-MBTCP module.

Installing the Module in the Rack

Procedures for physically installing the MVI69E-MBTCP module into the CompactLogix rack.

Setting Jumpers

Explanation of the setup jumper's function and how to configure it for firmware protection.

Package Contents

List of all components included in the MVI69E-MBTCP module package.

Adding the Module to RSLogix

Creating the Module in an RSLogix 5000 Project

Steps to add the MVI69E-MBTCP module into an RSLogix 5000 project using Add-On Profile or generic profile.

Installing ProSoft Configuration Builder

Guide to downloading and installing the ProSoft Configuration Builder software.

Generating the AOI (.L5X File) in ProSoft Configuration Builder

Process for creating and exporting an Add-On Instruction (.L5X) file using ProSoft Configuration Builder.

Importing the Add-On Instruction

Instructions on how to import the generated Add-On Instruction into an RSLogix 5000 project.

Adding Multiple Modules in the Rack (Optional)

Procedure for adding additional MVI69E-MBTCP modules to the CompactLogix rack.

Configuring the MVI69E-MBTCP Using PCB

Basic PCB Functions

Overview of fundamental operations and features within ProSoft Configuration Builder.

Module Configuration Parameters

Detailed explanation of all configurable parameters for the MVI69E-MBTCP module.

Downloading the Configuration File to the Processor

Steps for downloading the module's configuration file from a PC to the CompactLogix processor.

Uploading the Configuration File from the Processor

Process for retrieving the module's configuration file from the processor back to the PC.

MVI69E-MBTCP Backplane Data Exchange

General Concepts of the MVI69E-MBTCP Data Transfer

Fundamental principles of data transfer operations between the module and processor.

Backplane Data Transfer

Explanation of how data is transferred directly across the CompactLogix backplane.

Normal Data Transfer

Details on the structure and function of read and write blocks for data transfer.

Data Flow Between the Module and Processor

Description of data flow in Server and Master modes for module-processor communication.

Using Controller Tags

Controller Tags

Explanation of how data related to the MVI69E-MBTCP is stored in controller tags.

User-Defined Data Types (UDTs)

How User-Defined Data Types (UDTs) help organize and reuse data structures.

MBTCP Controller Tag Overview

Summary of the MBTCP controller tag structures used for module interaction.

Diagnostics and Troubleshooting

Ethernet LED Indicators

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

LED Status Indicators

Module operating status indicated by various LEDs for different conditions.

Troubleshooting

Step-by-step guide to resolve common issues encountered when the module is powered up.

Connecting the PC to the Module's Ethernet Port

Instructions on establishing a physical connection between a PC and the module's Ethernet port.

Using the Diagnostics Menu in ProSoft Configuration Builder

How to utilize ProSoft Configuration Builder's diagnostic menus for debugging.

Communication Error Codes

A comprehensive list and explanation of various communication error codes.

Connecting to the Module’s Webpage

Accessing the module's web interface for status, configuration, and firmware updates.

Reference

Product Specifications

Technical specifications, features, and capabilities of the MVI69E-MBTCP module.

About the Modbus TCP/IP Protocol

Background information on the Modbus TCP/IP protocol and its application.

Floating-Point Support

How the module supports and handles floating-point data transfer.

Function Blocks

Description of the various function blocks used for data transfer and control operations.

Ethernet Port Connection

Details on physical Ethernet port connections, including cable specifications.

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