ProSoft Technology MVI71-MNET User Manual

MVI71-MNET

PLC Platform

Modbus TCP/IP Interface Module

June 23, 2009

USER MANUAL

MVI (Multi Vendor Interface) Modules

WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.
AVERTISSEMENT - RISQUE D'EXPLOSION - AVANT DE DÉCONNECTER L'EQUIPMENT, COUPER LE
COURANT OU S'ASSURER QUE L'EMPLACEMENT EST DÉSIGNÉ NON DANGEREUX.

CL I Div 2 GPs A, B, C, D
Temp Code T5
II 3 G
Ex nA IIC T5 X
0° C <= Ta <= 60° C
II - Equipment intended for above ground use (not for use in mines).
3 - Category 3 equipment, investigated for normal operation only.
G - Equipment protected against explosive gasses.

Important Installation Instructions

Power, Input and Output (I/O) wiring must be in accordance with Class I, Division 2 wiring methods, Article 501-4 (b)
of the National Electrical Code, NFPA 70 for installation in the U.S., or as specified in Section 18-1J2 of the Canadian
Electrical Code for installations in Canada, and in accordance with the authority having jurisdiction. The following
warnings must be heeded:

A WARNING - EXPLOSION HAZARD - SUBSTITUTION OF COMPONENTS MAY IMPAIR SUITABILITY FOR

CLASS I, DIV. 2;

B WARNING - EXPLOSION HAZARD - WHEN IN HAZARDOUS LOCATIONS, TURN OFF POWER BEFORE

REPLACING OR WIRING MODULES, and

C WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN

SWITCHED OFF OR THE AREA IS KNOWN TO BE NONHAZARDOUS.

D "THIS DEVICE SHALL BE POWERED BY CLASS 2 OUTPUTS ONLY.

Warnings

North America Warnings

A Warning - Explosion Hazard - Substitution of components may impair suitability for Class I, Division 2.
B Warning - Explosion Hazard - When in Hazardous Locations, turn off power before replacing or rewiring

modules.
Warning - Explosion Hazard - Do not disconnect equipment unless power has been switched off or the area is
known to be nonhazardous.

C Suitable for use in Class I, division 2 Groups A, B, C and D Hazardous Locations or Non-Hazardous Locations.

ATEX Warnings and Conditions of Safe Usage:

Power, Input, and Output (I/O) wiring must be in accordance with the authority having jurisdiction

A Warning - Explosion Hazard - When in hazardous locations, turn off power before replacing or wiring modules.
B Warning - Explosion Hazard - Do not disconnect equipment unless power has been switched off or the area is

known to be non-hazardous.

C These products are intended to be mounted in an IP54 enclosure. The devices shall provide external means to

prevent the rated voltage being exceeded by transient disturbances of more than 40%. This device must be used
only with ATEX certified backplanes.

D DO NOT OPEN WHEN ENERGIZED.

Electrical Ratings

 Backplane Current Load: 800 mA @ 5 V DC; 3mA @ 24V DC
 Operating Temperature: 0 to 60°C (32 to 140°F)
 Storage Temperature: -40 to 85°C (-40 to 185°F)
 Shock: 30g Operational; 50g non-operational; Vibration: 5 g from 10 to 150 Hz
 Relative Humidity 5% to 95% (non-condensing)
 All phase conductor sizes must be at least 1.3 mm(squared) and all earth ground conductors must be at least

4mm(squared).

Markings

ANSI / ISA ISA 12.12.01 Class I Division 2, GPs A, B, C, D
CSA/cUL C22.2 No. 213-1987
CSA CB Certified IEC61010
ATEX EN60079-0 Category 3, Zone 2

EN60079-15

243333

Warning: This module is not hot-swappable! Always remove power from the rack before inserting or removing this
module, or damage may result to the module, the processor, or other connected devices.

Battery Life Advisory

All modules in the MVI series use a rechargeable Lithium Vanadium Pentoxide battery to backup the 512K SRAM
memory, real-time clock, and CMOS. The battery should last for the life of the module.
The module must be powered for approximately twenty hours before it becomes fully charged. After it is fully charged,
the battery provides backup power for the CMOS setup and configuration data, the real-time clock, and the 512K
SRAM memory for approximately 21 days.
Before you remove a module from its power source, ensure that the battery within the module is fully charged. A fully
charged battery will hold the BIOS settings (after being removed from its power source) for a limited number of days.
When the battery is fully discharged, the module will revert to the default BIOS settings.

Note: The battery is not user replaceable.

Your Feedback Please

We always want you to feel that you made the right decision to use our products. If you have suggestions, comments,
compliments or complaints about the product, documentation or support, please write or call us.

ProSoft Technology
5201 Truxtun Ave., 3rd Floor
Bakersfield, CA 93309
[phone]
[phone] (Fax)
www.prosoft-technology.com

Copyright © ProSoft Technology, Inc. 2009. All Rights Reserved.
MVI71-MNET User Manual

June 23, 2009
ProSoft Technology ®, ProLinx ®, inRAx ®, ProTalk®, and RadioLinx ® are Registered Trademarks of ProSoft

Technology, Inc. All other brand or product names are or may be trademarks of, and are used to identify products
and services of, their respective owners.

ProSoft Technology® Product Documentation

In an effort to conserve paper, ProSoft Technology no longer includes printed manuals with our product shipments.
User Manuals, Datasheets, Sample Ladder Files, and Configuration Files are provided on the enclosed CD, and are
available at no charge from our web site: www.prosoft-technology.com

Printed documentation is available for purchase. Contact ProSoft Technology for pricing and availability.
Asia Pacific: +603.7724.2080
Europe, Middle East, Africa: +33 (0) 5.3436.87.20
Latin America: +1.281.298.9109
North America: +1.661.716.5100

Contents MVI71-MNET ♦ PLC Platform
User Manual Modbus TCP/IP Interface Module

Contents

MVI (Multi Vendor Interface) Modules ................................................................................................2

Important Installation Instructions.......................................................................................................2

Warnings.............................................................................................................................................2

Battery Life Advisory...........................................................................................................................3

Your Feedback Please........................................................................................................................3

ProSoft Technology® Product Documentation...................................................................................4

Guide to the MVI71-MNET User Manual 7

1 Start Here 9

1.1 System Requirements...............................................................................................9

1.2 Package Contents...................................................................................................10

1.3 Install ProSoft Configuration Builder Software........................................................11

1.4 Setting Jumpers ......................................................................................................12

1.5 Install the Module in the Rack.................................................................................12

1.6 Connect your PC to the Processor..........................................................................14

1.7 Download the Sample Program to the Processor...................................................15

1.8 Connect your PC to the Module..............................................................................18

2 Module Configuration 19

2.1 Installing and Configuring the Module.....................................................................19

2.2 Module Data............................................................................................................22

2.3 Status Data..............................................................................................................22

2.4 User Data ................................................................................................................22

2.5 Event Command Data.............................................................................................23

2.6 Modbus Message Data ...........................................................................................23

2.7 ProSoft Configuration Builder..................................................................................23

2.8 Download the Project to the Module.......................................................................40

3 Ladder Logic 41

4 Diagnostics and Troubleshooting 43

4.1 Reading Status Data from the Module....................................................................43

4.2 LED Status Indicators..............................................................................................53

5 Reference 57

5.1 Product Specifications.............................................................................................57

5.2 Functional Overview................................................................................................59

5.3 Cable Connections..................................................................................................78

5.4 MVI71-MNET Status Data Definition for Side Connect File....................................82

5.5 Status Data Structure for Database Storage...........................................................83

5.6 Client Error/Status Data ..........................................................................................85

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5.7 Modbus Protocol Specification ............................................................................... 88

6 Support, Service & Warranty 99

6.1 How to Contact Us: Technical Support................................................................... 99

6.2 Return Material Authorization (RMA) Policies and Conditions............................. 100

6.3 LIMITED WARRANTY.......................................................................................... 101

Index 107

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User Manual Modbus TCP/IP Interface Module

Guide to the MVI71-MNET User Manual

Function Section to Read Details

Introduction
(Must Do)

Verify Communication,
Diagnostic and
Troubleshooting

Reference
Product Specifications
Functional Overview

Support, Service, and
Warranty

Index

→

→

→

→

Start Here (page 9)

Verifying
Communication
(page 53)

Diagnostics and
Troubleshooting
(page

43)

Reference (page 57)
Functional Overview

(page 59)
Product

Specifications (page

57)

Support, Service
and Warranty (page

99)

This Section introduces the customer to the
module. Included are: package contents,
system requirements, hardware installation, and
basic configuration.

This section describes how to verify
communications with the network. Diagnostic
and Troubleshooting procedures.

These sections contain general references
associated with this product, Specifications, and
the Functional Overview.

This section contains Support, Service and
Warranty information.

Index of chapters.

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1 Start Here

In This Chapter

 System Requirements.............................................................................9



Package Contents.................................................................................10

 Install ProSoft Configuration Builder Software.......................................11



Setting Jumpers ....................................................................................12

 Install the Module in the Rack ...............................................................12



Connect your PC to the Processor........................................................14

 Download the Sample Program to the Processor..................................15



Connect your PC to the Module ............................................................18

To get the most benefit from this User Manual, you should have the following
skills:

 Rockwell Automation® RSLogix™ software: launch the program,

configure ladder logic, and transfer the ladder logic to the processor

 Microsoft Windows: install and launch programs, execute menu commands,

navigate dialog boxes, and enter data.

 Hardware installation and wiring: install the module, and safely connect

Modbus TCP/IP and PLC devices to a power source and to the MVI71-MNET
module’s application ports.

Caution: You must be able to complete the application without exposing personnel or

equipment to unsafe or inappropriate working conditions.

1.1 System Requirements

The MVI71-MNET module requires the following minimum hardware and
software components:

 Rockwell Automation PLC processor, with compatible power supply and one

free slot in the rack, for the MVI71-MNET module. The module requires
800mA of available power.

 The PLC Processor must provide for at least 64 words of BTR/BTW area,

otherwise the module may not function correctly.

 Rockwell Automation RSLogix 5 programming software.
 Rockwell Automation RSLinx communication software
 Pentium® 100 MHz minimum. Pentium III 700 MHz (or better) recommended

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 Supported operating systems:

o Microsoft Windows XP
o Microsoft Windows 2000
o Microsoft Windows NT v4.0 with Service Pack 3 or greater
o Microsoft Windows ME
o Microsoft Windows 98

 64 Mbytes of RAM minimum, 256 Mbytes of RAM recommended
 100 Mbytes of free hard disk space (or more based on application

requirements)

 256-color VGA graphics adapter, 800 x 600 minimum resolution (True Color

1024 × 768 recommended)

 CD-ROM drive
 HyperTerminal or other terminal emulator program capable of file transfers

using Zmodem protocol.

1.2 Package Contents

The following components are included with your MVI71-MNET module, and are
all required for installation and configuration.

Important: Before beginning the installation, please verify that all of the following items are
present.

Qty. Part Name Part Number Part Description

1

1 Cable

1 Cable

1

MVI71-MNET
Module

inRAx
Solutions CD

MVI71-MNET Modbus TCP/IP Interface Module

Cable #15, RS232
Null Modem

RJ45 to DB9 Male
Adapter

For RS232 Connection to the CFG Port

For DB9 Connection to Module’s Port

Contains sample programs, utilities and
documentation for the MVI71-MNET module.

If any of these components are missing, please contact ProSoft Technology
Support for replacement parts.

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1.3 Install ProSoft Configuration Builder Software

You must install the ProSoft Configuration Builder (PCB) software in order to
configure the module. You can always get the newest version of ProSoft
Configuration Builder from the ProSoft Technology web site.

To install ProSoft Configuration Builder from the ProSoft Web Site

1 Open your web browser and navigate to http://www.prosoft-

technology.com/pcb

2 Click the D

Configuration Builder.

3 Choose "S
4 Save the file to your Desktop, so that you can find it easily when you have

finished downloading.

5 When the download is complete, locate and open the file, and then follow the

instructions on your screen to install the program.

If you do not have access to the Internet, you can install ProSoft Configuration
Builder from the ProSoft Solutions CD-ROM, included in the package with your
module.

To install ProSoft Configuration Builder from the Product CD

1 Insert the ProSoft Solutions Product CD into the CD drive of your PC. Wait for

the startup screen to appear.

2 On the startup screen, click P

explorer window.

3 Click to open the U

and files you will need to set up and configure your module.

4 Double-click the S

"PCB_*.

software on your PC. The information represented by the "*" character in the
file name is the PCB version number and, therefore, subject to change as
new versions of PCB are released.

OWNLOAD HERE link to download the latest version of ProSoft
AVE" or "SAVE FILE" when prompted.

RODUCT DOCUMENTATION. This action opens an

TILITIES folder. This folder contains all of the applications

ETUPCONFIGURATIONTOOL folder, double-click the

EXE" file and follow the instructions on your screen to install the

Note: Many of the configuration and maintenance procedures use files and other utilities on the
CD-ROM. You may wish to copy the files from the Utilities folder on the CD-ROM to a convenient
location on your hard drive.

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1.4 Setting Jumpers

The Setup Jumper acts as "write protection" for the module’s flash memory. In
"write protected" mode, the Setup pins are not connected, and the module’s
firmware cannot be overwritten. Do not jumper the Setup pins together unless
you are directed to do so by ProSoft Technical Support.

The following illustration shows the MVI71-MNET jumper configuration.

Note: If you are installing the module in a remote rack, you may prefer to leave the Setup pins
jumpered. That way, you can update the module’s firmware without requiring physical access to
the module.

1.5 Install the Module in the Rack

If you have not already installed and configured your PLC processor and power
supply, please do so before installing the MVI71-MNET module. Refer to your
Rockwell Automation product documentation for installation instructions.

Warning: You must follow all safety instructions when installing this or any other electronic
devices. Failure to follow safety procedures could result in damage to hardware or data, or even
serious injury or death to personnel. Refer to the documentation for each device you plan to
connect to verify that suitable safety procedures are in place before installing or servicing the
device.

After you have checked the placement of the jumpers, insert MVI71-MNET into
the PLC™ chassis. Use the same technique recommended by Rockwell
Automation to remove and install PLC modules.

Warning: This module is not hot-swappable! Always remove power from the rack before
inserting or removing this module, or damage may result to the module, the processor, or other
connected devices.

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1 Turn power OFF.
2 Align the module with the top and bottom guides, and slide it into the rack

until the module is firmly against the backplane connector.

3 With a firm but steady push, snap the module into place.
4 Check that the holding clips on the top and bottom of the module are securely

in the locking holes of the rack.

5 Make a note of the slot location. You will need to identify the slot in which the

module is installed in order for the sample program to work correctly. Slot
numbers are identified on the green circuit board (backplane) of the PLC
rack.

6 Turn power ON.

Note: If you insert the module improperly, the system may stop working, or may behave
unpredictably.

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1.6 Connect your PC to the Processor

1 Connect the right-angle connector end of the cable to your controller at the

communications port.

2 Connect the straight connector end of the cable to the serial port on your

computer.

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1.7 Download the Sample Program to the Processor

To download the sample program from RSLogix 5 to the PLC processor:

Note: The key switch on the front of the PLC processor must be in the REM position.

1 If you are not already online to the processor, open the Communications

menu, and then choose Download. RSLogix will establish communication
with the processor.

2 Click the Download button to transfer the sample program to the processor.
3 When prompted, choose Computer to PLC

4 RSLogix will compile the program and transfer it to the processor. This

process may take a few minutes.

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5 When the download is complete, RSLogix will open another confirmation

dialog box. Click OK to switch the processor from Program mode to Run
mode.

Note: If you receive an error message during these steps, refer to your RSLogix documentation to
interpret and correct the error.

1.7.1 Configuring the RSLinx Driver for the PC COM Port

If RSLogix is unable to establish communication with the processor, follow these steps

1 Open RSL
2 Open the C

INX.

OMMUNICATIONS menu, and choose CONFIGURE DRIVERS.

This action opens the C

ONFIGURE DRIVERS dialog box.

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Note: If the list of configured drivers is blank, you must first choose and configure a driver from the
Available Driver Types list. The recommended driver type to choose for serial communication with
the processor is RS-232 DF1 DEVICES.

3 Click to select the driver, and then click CONFIGURE. This action opens the

C

ONFIGURE ALLEN-BRADLEY DF1 COMMUNICATIONS DEVICE dialog box.

4 Click the A

UTO-CONFIGURE button. RSLinx will attempt to configure your

serial port to work with the selected driver.

5 When you see the message A

UTO CONFIGURATION SUCCESSFUL, click the OK

button to dismiss the dialog box.

Note: If the auto-configuration procedure fails, verify that the cables are connected correctly
between the processor and the serial port on your computer, and then try again. If you are still
unable to auto-configure the port, refer to your RSLinx documentation for further troubleshooting
steps.

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1.8 Connect your PC to the Module

With the module securely mounted, connect your PC to the Configuration/Debug
port using an RJ45-DB-9 Serial Adapter Cable and a Null Modem Cable.

1 Attach both cables as shown.
2 Insert the RJ45 cable connector into the Configuration/Debug port of the

module.

3 Attach the other end to the serial port on your PC.

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2 Module Configuration

In This Chapter

 Installing and Configuring the Module ...................................................19



Module Data..........................................................................................22

 Status Data............................................................................................22



User Data..............................................................................................22

 Event Command Data...........................................................................23



Modbus Message Data..........................................................................23

 ProSoft Configuration Builder................................................................23



Download the Project to the Module......................................................40

This section contains the setup procedure, data, and ladder logic for successful
application of the MVI71-MNET module. Each step in the setup procedure is
defined in order to simplify the use of the module. Set up for the module for both
the BTR/BTW and side-connect interfaces is covered.

2.1 Installing and Configuring the Module

This chapter describes how to install and configure the module to work with your
application. The configuration process consists of the following steps.

1 Modify the module’s configuration files to meet the needs of your application,

and copy the updated configuration to the module. Example configuration
files are provided on the CD-ROM. Refer to the Modifying the Example
Configuration File section, later in this chapter, for more information on the
configuration files.

2 Modify the example ladder logic to meet the needs of your application, and

copy the ladder logic to the processor. Example ladder logic files are provided
on the CD-ROM.

Note: If you are installing this module in an existing application, you can copy the necessary
elements from the example ladder logic into your application.

The rest of this chapter describes these steps in more detail.
It is now time to edit the MNET.CFG file to set up the module for the specific

application. Refer to the Configuration File section of this document. Download
this configuration to the module along with the associated ladder logic.

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The next step in installing and configuring the module is to define whether the
block transfer or side-connect interface will be utilized. If the block transfer
interface is to be used you should be ready to connect the module to the Modbus
TCP/IP network if the ladder logic is defined correctly.

If the side-connect interface is utilized, make sure the file SC_DATA.TXT on the
Compact Flash Disk contains the correct first file number. You can run the
setdnpsc.exe program to set the file number to be used with your application.
Install the module in the rack and turn on the power. Connect the serial cable to
the module’s debug/configuration port and exit the program by pressing [E

SC][X].

This will cause the program to exit and remain at the operating system prompt.
Run the setdnpsc.exe program with a command line argument of the file number
to use for the first file. For example, to select N10: as the first file, enter the
following:

SETDNPSC 10

The program will build the SC_DATA.TXT on the Compact Flash Disk (C: drive in
the root directory).

Next, define the data files to be used with the application. If the block transfer
interface is used, define the data files to hold the user data (read and write data).
Enter the ladder logic to handle the blocks transferred between the module and
the PLC. Download the program to the PLC and test the program with the
module.

If the side-connect interface is used, no ladder logic is required for data transfer.
The user data files to interface with the module must reside in contiguous order
in the processor. The first file to be used by the interface is the status/control file.
This is file number set in the SC_DATA.TXT file using the SETDNPSC.EXE
program. The following table lists the files used by the side-connect interface:

File Number Example Size Description

Cfg File N10 200 Control/Status File
Cfg File+1 N11 to 1000 Data transferred from the module to the processor
Other files for read data
Cfg File+1+n N12 to 1000 Data transferred from the processor to the module
Cfg File+1+n+m Other files for write data

n is the number of read data files minus one. Each file contains up to 1000
words.

m is the number of write data files minus one. Each file contains up to 1000
words.

More than one read and/or write file may exist in an application. This is required
when more than 1000 words of data are required. Two examples are given below
for the files used with different data set sizes:

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2.1.1 Example of 240 words of read and write data (cfg file=10)

Data Files Description

N11:0 to 239 Read data
N12:0 to 239 Write data

2.1.2 Example of 2300 read and 3500 write data registers (cfg
file=10)

Data Files Description

N11:0 to 999 Read data words 0 to 999
N12:0 to 999 Read data words 1000 to 1999
N13:0 to 299 Read data words 2000 to 2299
N14:0 to 999 Write data words 0 to 999
N15:0 to 999 Write data words 1000 to 1999
N16:0 to 999 Write data words 2000 to 2999
N17:0 to 499 Write data words 3000 to 3499

Even if the files are not required for an application, they still are reserved and
should only be used for that purpose. The read and write data contained in the
last set of files possess the data transferred between the module and the
processor. The read data file (Cfg File + 1) will contain data transferred from the
module to the processor and should be associated with control data types. The
write data file (Cfg File + 1 + n) will contain data passed to the module from the
processor and should be associated with monitor data types.

Special care must be taken when defining the files for the side-connect interface.
Because the module directly interacts with the PLC processor and its memory,
any errors in the configuration may cause the processor to fault and it may even
lose its configuration and program. After defining the files and populating them
with the correct data, download the program to the processor, and place the
processor in run mode. If everything is configured correctly, the module should
start its normal operation.

The module is now set up and ready to be used with your application. Insert the
module in the rack (with the power turned off) and attach the serial
communication cables. Download the new application to the controller and place
the processor in run mode. Download the new MNET.CFG file to the module
using a terminal emulation program. If all the configuration parameters are set
correctly and the module is attached to a network, the module’s Application LED
(APP LED) should remain off and the backplane activity LED (BP ACT) should
blink very rapidly.

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2.2 Module Data

All data related to the MVI71-MNET module is stored in a user defined data files.
It is the responsibility of the ladder logic programmer to construct all the data files
required by the program and to write the ladder logic required to interface to
these files.

2.3 Status Data

When the side-connect interface is employed in the application, the status data is
automatically transferred from the module to the first file used by the interface.
The data is placed at an offset of 0 in the file and has the format shown in the
Reference chapter.

When the block transfer interface is used, the status data is placed in the
module’s internal database at the location specified by the Error/Status Offset
parameter in the configuration file. If this data area is transferred to the processor
in the read data area, it will be passed from the module to the processor in a
normal BTR block. This will be placed in the normal read data area. The format
of the data is exactly the same as shown above, but the user determines its
position. Refer to the Reference chapter for a complete listing of the data stored
in this object.

2.4 User Data

When the side-connect interface is utilized, the read and write data is moved
between the module and the processor without any ladder logic. The size of the
data area and position of the data areas in the module’s database is determined
by the parameters set in the configuration file.

When the block transfer interface is used, ladder logic is required to page the
data between the module and the processor. The size of the data area and
position of the data areas in the module’s database is determined by the
parameters set in the configuration file.

The read data area should be set to match the value entered in the Read
Register Count parameter of the MNET.CFG file. For ease of use, this array
should be dimensioned as an even increment of 60 words. This data is paged up
to 60 words at a time from the module to the processor. The Read Data task is
responsible for placing the data received into the proper position in the read data
array. Use this data for status and control in the ladder logic of the processor.

The write data area should be set to match the value entered in the Write
Register Count parameter of the MNET.CFG file. For ease of use, this array
should be dimensioned as even increments of 60 words. This data is paged up to
60 words at a time from the processor to the module. The Write Data task is
responsible for placing the write data into the output image for transfer to the
module. This data is passed from the processor to the module for status and
control information for use in other nodes on the network.

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2.5 Event Command Data

A user file containing Event Command Data is only required when event
commands are utilized in the application. This file holds the information required
for an event command. An array of these objects should be defined and hold the
event command set to be employed in the application.

2.6 Modbus Message Data

This new version of the module’s program includes the pass-through mode. In
this mode, write messages sent to a slave port are passed directly through to the
processor. It is the responsibility of the ladder logic to process the message
received using this feature. If the side-connect interface is used, this data set will
be placed in the file selected in the SC_DATA.TXT file starting at register offset

50. Ladder logic is required to parse the message or data set received and to

place the data in the correct user data file.
If the block transfer interface is utilized, the pass-through messages will be

passed from the module to the processor in special control blocks. Ladder logic
is required to handle each block received and to place the data in the correct
user data file.

This information is passed from the module to the processor using a block
identification code of 9996 if the unformatted pass-through mode (code 1) is
selected. Word two of this block contains the length of the message and the
message starts at word 3. Other controller tags are required to store the
controlled values contained in these messages. The Modbus protocol supports
control of binary output (coils - functions 5 and 15) and registers (functions 6 and

16).

Additionally, formatted message blocks can be sent from the module to the
processor when the pass-through option is selected using the format selection
(codes 2 or 3 in the MNET.CFG file). These blocks require less decoding than
the unformatted blocks. Refer to the user manual for a full discussion on utilizing
the pass-through option in an application.

2.7 ProSoft Configuration Builder

ProSoft Configuration Builder (PCB) provides a quick and easy way to manage
module configuration files customized to meet your application needs. PCB is not
only a powerful solution for new configuration files, but also allows you to import
information from previously installed (known working) configurations to new
projects.

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2.7.1 Set Up the Project

To begin, start ProSoft Configuration Builder. If you have used other Windows
configuration tools before, you will find the screen layout familiar. ProSoft
Configuration Builder’s window consists of a tree view on the left, an information
pane and a configuration pane on the right side of the window. When you first
start ProSoft Configuration Builder, the tree view consists of folders for Default
Project and Default Location, with a Default Module in the Default Location
folder. The following illustration shows the ProSoft Configuration Builder window
with a new project.

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Your first task is to add the MVI71-MNET module to the project.
1 Use the mouse to select "Default Module" in the tree view, and then click the

right mouse button to open a shortcut menu.

2 On the shortcut menu, choose "Choose Module Type". This action opens the

Choose Module Type dialog box.

3 In the Product Line Filter area of the dialog box, select MVI71. In the Select

Module Type dropdown list, select MVI71-MNET, and then click OK to save
your settings and return to the ProSoft Configuration Builder window.

The next task is to set the module parameters.

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2.7.2 Set Module Parameters

Notice that the contents of the information pane and the configuration pane
changed when you added the MVI71-MNET module to the project.

At this time, you may wish to rename the "Default Project" and "Default Location"
folders in the tree view.

To rename an object:

1 Select the object, and then click the right mouse button to open a shortcut

menu. From the shortcut menu, choose R

ENAME.

2 Type the name to assign to the object.
3 Click away from the object to save the new name.

Module Entries

To configure module parameters

1 Click on the plus sign next to the
2 Double-click the

icon to expand module information.

icon to open the EDIT dialog box.

3 To edit a parameter, select the parameter in the left pane and make your

changes in the right pane.

4 Click OK

to save your changes.

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Printing a Configuration File

To print a configuration file:

1 Select the M

ODULE icon, and then click the right mouse button to open a

shortcut menu.

2 On the shortcut menu, choose V

V

IEW CONFIGURATION window.

3 On the V

P

RINT. This action opens the PRINT dialog box.

4 On the P

IEW CONFIGURATION window, open the FILE menu, and choose
RINT dialog box, choose the printer to use from the dropdown list,

select printing options, and then click OK.

IEW CONFIGURATION. This action opens the

2.7.3 [Module]

This section of the configuration describes the database setup and module level
parameters. This section provides the module with a unique name, identifies the
method of failure for the communications for the module if the processor is not in
run, and describes how to initialize the module upon startup.

Module Name

0 to 80 characters
This parameter assigns a name to the module that can be viewed using the

configuration/debug port. Use this parameter to identify the module and the
configuration file.

Error/Status Pointer

-1 to 4955

Starting register location in virtual Modbus database for the error/status table. If a
value of -1 is entered, the error/status data will not be placed in the database. All
other valid values determine the starting location of the data. This data area
includes the module version information and all server error/status data.

Read Register Start

0 to 4999
This parameter specifies the starting register in the module where data will be

transferred from the module to the processor. Valid range for this parameter is 0
to 4999.

Read Register Count

0 to 5000
This parameter specifies the number of registers to be transferred from the

module to the processor. Valid entry for this parameter is 0 to 5000.

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Write Register Start

0 to 4999
This parameter specifies the starting register in the module where the data will be

transferred from the processor to the module. Valid range for this parameter is 0
to 4999.

Write Register Count

0 to 5000
This parameter specifies the number of registers to transfer from the processor to

the module. Valid entry for this parameter is 0 to 5000 words.

Failure Flag Count

0 through 65535
This parameter specifies the number of successive transfer errors that must

occur before the communication ports are shut down. If the parameter is set to 0,
the communication ports will continue to operate under all conditions. If the value
is set larger than 0 (1 to 65535), communications will cease if the specified
number of failures occur.

Initialize Output Data

Yes or No
The Initialize Output Data parameter determines if the output data for the module

should be initialized with values from the processor. If the value is set to N, the
output data will be initialized to 0. If the value is set to Y during initialization, the
module will invert (for this scan only) all backplane commands (Type 2).

Pass-Through Mode

0, 1, 2 or 3
This parameter specifies the pass-through mode for write messages received by

the MNET and MBAP server ports.
 If the parameter is set to 0, all write messages will be placed in the module’s

virtual database.

 If a value of 1 is entered, write messages received will be sent to the

processor as unformatted messages.

 If a value of 2 is entered, write messages received will be sent to the

processor as formatted messages.

 If a value of 3 is entered, write messages received will be sent to the

processor with the bytes swapped in a formatted message.

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Duplex/Speed Code

0, 1, 2, 3 or 4
This parameter allows you to force the module to use a specific duplex and

speed setting.

 Value = 1: Half duplex, 10 MB speed
 Value = 2: Full duplex, 10 MB speed
 Value = 3: Half duplex, 100 MB speed
 Value = 4: Full duplex, 100 MB speed
 Value = 0: Auto negotiate.

Auto Negotiate is the default value for backward compatibility. This feature is not
implemented in older software revisions.

2.7.4 [Static ARP Table]

The Static ARP Table defines a list of static IP addresses that the module will
use when an ARP (Address Resolution Protocol) is required. The module will
accept up to 40 static IP/MAC address data sets.

Use the Static ARP table to reduce the amount of network traffic by specifying IP
addresses and their associated MAC (hardware) addresses that the MVI71­MNET module will be communicating with regularly.

Important: If the device in the field is changed, this table must be updated to contain the new MAC
address for the device and downloaded to the module. If the MAC is not changed, no
communications with the module will be provided.

IP Address

Dotted notation
This table contains a list of static IP addresses that the module will use when an

# ARP is required. The module will accept up to 40 static IP/MAC address data
sets.

Important: If the device in the field is changed, this table must be updated to contain the new MAC
address for the device and downloaded to the module. If the MAC is not changed, no
communications with the module will occur.

Hardware MAC Address

Hex Value
This table contains a list of static MAC addresses that the module will use when

an # ARP is required. The module will accept up to 40 static IP/MAC address
data sets.

Important: If the device in the field is changed, this table must be updated to contain the new MAC
address for the device and downloaded to the module. If the MAC is not changed, no
communications with the module will occur.

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2.7.5 [MNET Client x]

This section defines the configuration for the master device(s) simulated on
MNET port.

Error/Status Pointer

-1 to 4990
Starting register location in virtual database for the error/status table for this

client. If a value of -1 is entered, the error/status data will not be placed in the
database. All other valid values determine the starting location of the data.

Minimum Command Delay

0 to 65535
This parameter specifies the number of milliseconds to wait between the initial

issuance of a command. This parameter can be used to delay all commands sent
to slaves to avoid "flooding" commands on the network. This parameter does not
affect retries of a command as they will be issued when failure is recognized.

Command Error Pointer

-1 to 4999
This parameter sets the address in the internal database where the command

error data will be placed. If the value is set to -1, the data will not be transferred
to the database.

Response Timeout

0 to 65535 milliseconds
This parameter represents the message response timeout period in 1 millisecond

increments. This is the time that a client will wait before re-transmitting a
command if no response is received from the addressed server. The value is set
depending upon the communication network used and the expected response
time of the slowest device on the network.

Retry Count

0 to 10
This parameter specifies the number of times a command will be retried if it fails.

Float Flag

Yes or No
This flag specifies if the floating-point data access functionality is to be

implemented. If the float flag is set to Yes, Modbus functions 3, 6 and 16 will
interpret floating point values for registers as specified by the two following
parameters.

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