MNET
ProLinx Gateway
Modbus TCP/IP Interface Module
September 1, 2010
DRIVER MANUAL
Your Feedback Please
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Copyright © 2010 ProSoft Technology, Inc., all rights reserved.
MNET Driver Manual
September 1, 2010
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-ROM,
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.
North America: +1.661.716.5100
Asia Pacific: +603.7724.2080
Europe, Middle East, Africa: +33 (0) 5.3436.87.20
Latin America: +1.281.298.9109
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
C WARNING - EXPLOSION HAZARD - DO NOT DISCONNECT EQUIPMENT UNLESS POWER HAS BEEN
SWITCHED OFF OR THE AREA IS KNOWN TO BE NON-HAZARDOUS.
D THIS DEVICE SHALL BE POWERED BY CLASS 2 OUTPUTS ONLY.
All ProLinx
®
Products
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.
Markings
cULus ISA 12.12.01 Class I, Div 2 Groups A, B, C, D
cULus C22.2 No. 213-M1987
183151
CL I Div 2 GPs A, B, C, D
II 3 G
Ex nA nL IIC 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.
ProLinx Gateways with Ethernet Ports
Series C ProLinx™ Gateways with Ethernet ports do NOT include the HTML Web Server. The HTML Web Server
must be ordered as an option. This option requires a factory-installed hardware addition. The HTML Web Server now
supports:
8 MB file storage for HTML files and associated graphics files (previously limited to 384K)
32K maximum HTML page size (previously limited to 16K)
To upgrade a previously purchased Series C model:
Contact your ProSoft Technology distributor to order the upgrade and obtain a Returned Merchandise Authorization
(RMA) to return the unit to ProSoft Technology.
To order a ProLinx Plus gateway with the -WEB option
Add -WEB to the standard ProLinx part number. For example, 5201-MNET-MCM-WEB.
MNET ♦ ProLinx Gateway Contents
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 5 of 78
September 1, 2010
Contents
Your Feedback Please ........................................................................................................................ 2
ProSoft Technology
®
Product Documentation .................................................................................... 2
Important Installation Instructions ....................................................................................................... 3
All ProLinx
®
Products .......................................................................................................................... 3
ProLinx Gateways with Ethernet Ports ............................................................................................... 3
To upgrade a previously purchased Series C model: .................................................................... 3
To order a ProLinx Plus gateway with the -WEB option ................................................................ 3
1 Functional Overview 9
1.1 Modbus TCP/IP (MNET) Port .................................................................................. 10
1.2 General Specifications ............................................................................................ 11
1.3 Modbus TCP/IP ....................................................................................................... 12
1.4 Internal Database .................................................................................................... 13
1.4.1 Modbus TCP/IP Client Access to Database............................................................ 13
1.4.2 Modbus TCP/IP Server Access to Database .......................................................... 13
1.4.3 Modbus Message Routing: Port 2001 ..................................................................... 15
2 Modbus TCP/IP Protocol Configuration 17
2.1 Installing ProSoft Configuration Builder Software ................................................... 18
2.1.1 Using the Online Help ............................................................................................. 18
2.2 Configure the Gateway ............................................................................................ 19
2.2.1 Configuring Module Parameters ............................................................................. 19
2.2.2 Printing a Configuration File .................................................................................... 19
2.3 [MNET Servers] ....................................................................................................... 20
2.3.1 Float Flag ................................................................................................................ 20
2.3.2 Float Start ................................................................................................................ 20
2.3.3 Float Offset .............................................................................................................. 20
2.3.4 Output Offset ........................................................................................................... 21
2.3.5 Bit Input Offset ......................................................................................................... 21
2.3.6 Holding Register Offset ........................................................................................... 21
2.3.7 Word Input Offset .................................................................................................... 21
2.3.8 Connection Timeout ................................................................................................ 21
2.4 [MNET CLIENT 0] ................................................................................................... 22
2.4.1 Minimum Command Delay ...................................................................................... 22
2.4.2 Response Timeout .................................................................................................. 22
2.4.3 Retry Count ............................................................................................................. 22
2.4.4 Float Flag ................................................................................................................ 23
2.4.5 Float Start ................................................................................................................ 23
2.4.6 Float Offset .............................................................................................................. 23
2.4.7 ARP Timeout ........................................................................................................... 23
2.4.8 Command Error Delay ............................................................................................. 23
2.5 [MNET CLIENT 0 COMMANDS] ............................................................................. 24
2.5.1 Command List Overview ......................................................................................... 24
2.5.2 Commands Supported by the Module ..................................................................... 25
2.5.3 Command Entry Formats ........................................................................................ 25
2.5.4 Enable ..................................................................................................................... 26
2.5.5 Internal Address ...................................................................................................... 27
Contents MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 6 of 78 ProSoft Technology, Inc.
September 1, 2010
2.5.6 Reg Count ............................................................................................................... 27
2.5.7 Swap Code ............................................................................................................. 28
2.5.8 Node IP Address ..................................................................................................... 28
2.5.9 Service Port ............................................................................................................ 28
2.5.10 Slave Address ......................................................................................................... 29
2.5.11 Modbus Function .................................................................................................... 29
2.5.12 MB Address in Device ............................................................................................ 30
2.6 Using the CommonNet Data Map ........................................................................... 31
2.6.1 From Address ......................................................................................................... 32
2.6.2 To Address .............................................................................................................. 32
2.6.3 Register Count ........................................................................................................ 32
2.6.4 Swap Code ............................................................................................................. 32
2.6.5 Delay Preset ........................................................................................................... 33
2.7 Ethernet Configuration ............................................................................................ 34
2.8 Downloading a File from PC to the Module ............................................................ 35
3 Diagnostics and Troubleshooting 37
3.1 Debug Port Requirements ...................................................................................... 38
3.1.1 Using ProSoft Configuration Builder (PCB) for Diagnostics ................................... 38
3.1.2 Main Menu .............................................................................................................. 41
3.1.3 Database View Menu .............................................................................................. 43
3.1.4 Master Command Error List Menu.......................................................................... 45
3.1.5 Master Command List Menu ................................................................................... 46
3.1.6 Network Menu ......................................................................................................... 47
3.2 LED Indicators ........................................................................................................ 49
3.2.1 Base Module LEDs ................................................................................................. 49
3.2.2 Ethernet LED Indicators .......................................................................................... 49
3.3 MNET Error and Status Data .................................................................................. 50
3.3.1 MNET Client Error/Status Data ............................................................................... 50
3.3.2 MNET Server Port 2000 Status Error Locations ..................................................... 51
3.3.3 MNET Server Port 502 Status Error Locations ....................................................... 52
3.3.4 MNET Server Port 2001 Error Locations ................................................................ 52
3.3.5 MNET Client Command List Error Data ................................................................. 53
4 Modbus Protocol Specification 55
4.1 Read Coil Status (Function Code 01) ..................................................................... 56
4.2 Read Input Status (Function Code 02) ................................................................... 57
4.3 Read Holding Registers (Function Code 03) .......................................................... 58
4.4 Read Input Registers (Function Code 04) .............................................................. 59
4.5 Force Single Coil (Function Code 05) .................................................................... 60
4.6 Preset Single Register (Function Code 06) ............................................................ 61
4.7 Diagnostics (Function Code 08) ............................................................................. 62
4.7.1 Sub-function codes supported ................................................................................ 63
4.7.2 Modbus Exception Responses ............................................................................... 64
4.8 Force Multiple Coils (Function Code 15) ................................................................ 66
4.9 Preset Multiple Registers (Function Code 16) ........................................................ 67
5 Support, Service & Warranty 69
How to Contact Us: Technical Support ............................................................................................ 69
5.1 Return Material Authorization (RMA) Policies and Conditions ............................... 71
MNET ♦ ProLinx Gateway Contents
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 7 of 78
September 1, 2010
5.1.1 All Product Returns: ................................................................................................ 71
5.1.2 Procedures for Return of Units Under Warranty: .................................................... 72
5.1.3 Procedures for Return of Units Out of Warranty: .................................................... 72
5.2 LIMITED WARRANTY ............................................................................................. 73
5.2.1 What Is Covered By This Warranty ......................................................................... 73
5.2.2 What Is Not Covered By This Warranty .................................................................. 74
5.2.3 Disclaimer Regarding High Risk Activities .............................................................. 74
5.2.4 Intellectual Property Indemnity ................................................................................ 75
5.2.5 Disclaimer of all Other Warranties .......................................................................... 75
5.2.6 Limitation of Remedies ** ........................................................................................ 76
5.2.7 Time Limit for Bringing Suit ..................................................................................... 76
5.2.8 No Other Warranties ............................................................................................... 76
5.2.9 Allocation of Risks ................................................................................................... 76
5.2.10 Controlling Law and Severability ............................................................................. 76
Index 77
Contents MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 8 of 78 ProSoft Technology, Inc.
September 1, 2010
MNET ♦ ProLinx Gateway Functional Overview
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 9 of 78
September 1, 2010
1 Functional Overview
Modbus TCP/IP (MNET) Port
In This Chapter
................................................................ 10
General Specifications........................................................................... 11
Modbus TCP/IP ..................................................................................... 12
Internal Database .................................................................................. 13
The ProLinx Modbus TCP/IP (MNET) driver can be used to interface many
different protocols into the Schneider Electric Quantum family of processors as
well other devices supporting the protocol. The MNET driver supports Client
connections as well as Server connections, and, with the addition of the WEB
hardware option, the gateway also provides HTTP, FTP and Email capability.
The Ethernet driver interfaces with a common internal database in the gateway.
This permits the sharing of data across many different protocols and networks.
The following illustration shows the functionality of the MNET driver.
Functional Overview MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 10 of 78 ProSoft Technology, Inc.
September 1, 2010
1.1 Modbus TCP/IP (MNET) Port
The gateway supports a client connection on the TCP/IP network to interface
with processors (and other server based devices) using a user constructed
command list of up to 100 entries. The gateway’s internal database is used as
the source for write commands to the remote processors. Data collected from the
processors using read commands is placed in the gateway’s database.
Data in the gateway’s internal database is accessible for read and write
operations by any node on the network supporting the MBAP (Service Port 502)
or MNET (Service Ports 2000/2001) TCP/IP protocols. The MBAP protocol (Port
502) is a standard implementation defined by Schneider Automation and used on
their Quantum Processor. This open protocol is a modified version of the serial
Modbus protocol. The MNET protocol is an embedded Modbus protocol
message in a TCP/IP packet. The gateway supports up to five active server
connections on Service Ports 502, five additional active server connections on
Service Port 2000, and one active client connection.
DATA
LINK
DATA
LINK
MNET ♦ ProLinx Gateway Functional Overview
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 11 of 78
September 1, 2010
1.2 General Specifications
10 MB Ethernet Application port
Supports Enron version of Modbus protocol for floating-point data
transactions
Configurable parameters for the client including a minimum response delay of
0 to 65535 ms and floating-point support
Supports five independent server connections for Service Port 502
Supports five independent server connections for Service Port 2000
All data mapping begins at Modbus register 400001, protocol base 0.
Error codes, network error counters, and port status data available in user
data memory
Functional Overview MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 12 of 78 ProSoft Technology, Inc.
September 1, 2010
1.3 Modbus TCP/IP
ProSoft’s Modbus TCP/IP implementation uses the module’s shared internal
memory for data transfer. Sharing the memory with another protocol driver allows
the module to transfer data between Modbus TCP/IP devices and other devices
on other networks.
Configurable floating-point data movement is supported, including support for
Enron or Daniel
®
floating-point applications.
Modbus TCP/IP Server (Slave)
The server driver accepts incoming connections on Service Port 502 for clients
using Modbus TCP/IP MBAP messages and from clients on Service Port 2000
(or other Service Ports) for clients using Encapsulated Modbus messages..
Supports five independent server connections for Service Port 502 (MBAP)
Supports five independent server connections for Service Port 2000
(Encapsulated)
Supports a total Modbus TCP/IP data transfer capacity of up to 4000
registers or up to 64,000 bits in any combination of data types throughout the
memory database
Modbus data types overlap in the gateway’s memory database, so the same
data can be conveniently read or written as bit-level or register-level data.
Modbus TCP/IP Client (Master)
Actively reads data from and writes data to Modbus TCP/IP devices, using
MBAP or Encapsulated Modbus message formats
Offers one client connection with up to 100 commands to talk to multiple
severs
Status Data
Error codes, counters, and port status available
MNET ♦ ProLinx Gateway Functional Overview
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 13 of 78
September 1, 2010
1.4 Internal Database
Central to the functionality of the gateway is the internal database. This database
is shared between all the ports on the gateway and is used as a conduit to pass
information from one device on one network to one or more devices on another
network. This permits data from devices on one communication port to be viewed
and controlled by devices on another port.
In addition to data from the Server and Client ports, status and error information
generated by the gateway can also be mapped into the internal database.
1.4.1 Modbus TCP/IP Client Access to Database
The client functionality exchanges data between MNET module's internal
database and data tables established in one or more Quantum processors or
other server based devices. The command list, defined in the user configuration,
defines what data is to be transferred between the module and each of the
servers on the network. No ladder logic is required in the processor (server) for
client functionality, except to assure that sufficient data memory exists.
The following illustration describes the flow of data between the Ethernet clients
and the internal database.
1.4.2 Modbus TCP/IP Server Access to Database
The MNET gateway provides server functionality using reserved Service Port
502 for Modbus TCP/IP MBAP messages, as well as Service Ports 2000 and
2001 to support the TCP/IP Encapsulated Modbus version of the protocol used
by several HMI manufacturers. Server support in the gateway permits client
applications (that is, HMI software, Quantum processors, and so on) to read from
and write to the gateway’s database. This document discusses the requirements
for attaching to the gateway using client applications.
Functional Overview MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 14 of 78 ProSoft Technology, Inc.
September 1, 2010
The Server driver is able to support multiple concurrent connections from several
Clients. Up to five (5) Clients can simultaneously connect on Service Port 502
and five (5) more can also simultaneously connect on Service Port 2000. Service
Port 2001 is used by the MNET driver to pass Encapsulated Modbus commands
through from the Ethernet port to the gateway’s serial port (Modbus pass-through
support is available on 5201-MNET-MCM and 5202-MNET-MCM4 models only).
When configured as a Server, the internal database of the MNET gateway is
used as the source for read requests and the destination for write requests from
remote clients. Access to the database is controlled by the command type
received in the incoming message from the Client. The following table defines the
relationship of the gateway’s internal database to the addresses required in the
incoming Modbus TCP/IP requests:
Database Address Modbus Address
0 40001
1000 41001
2000 42001
3000 43001
3999 44000
The following virtual addresses are not part of the normal gateway user database
and are not valid addresses for standard data. However, these addresses may
be used for incoming commands that are requesting floating-point data. To use
addresses in this upper range requires you to set the Float Flag to Yes, the Float
Start to a database address in the range below, and the Float Offset to a
database address in the gateway user memory area shown above. Remember
that, once you do this, all data above the Float Start address must be floating-
point data.
Database Address Modbus Address
4000 44001
5000 45001
6000 46001
7000 47001
8000 48001
9000 49001
9999 50000
The MNET gateway must be correctly configured and connected to the network
before you attempt to use it. Use a network verification program, such as the
command prompt PING instruction, to verify that the gateway can be seen on the
network. Use ProSoft Configuration Builder to confirm proper configuration of the
gateway and to transfer the configuration files to and from the gateway.
MNET ♦ ProLinx Gateway Functional Overview
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 15 of 78
September 1, 2010
1.4.3 Modbus Message Routing: Port 2001
When Modbus messages are sent to the module over the TCP/IP connection to
port 2001, the messages are sent (routed in the module) directly out the serial
communication port (Port 0, if it is configured as a Modbus Master. The
commands (whether a read or a write command) are immediately routed to the
slave devices on the serial port. Response messages from the slave devices are
routed to the TCP/IP network to be received by the originating host.
Functional Overview MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 16 of 78 ProSoft Technology, Inc.
September 1, 2010
MNET ♦ ProLinx Gateway Modbus TCP/IP Protocol Configuration
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 17 of 78
September 1, 2010
2 Modbus TCP/IP Protocol Configuration
Installing ProSoft Configuration Builder Software
In This Chapter
.................................. 18
Configure the Gateway .......................................................................... 19
[MNET Servers] ..................................................................................... 20
[MNET CLIENT 0] ................................................................................. 22
[MNET CLIENT 0 COMMANDS] ........................................................... 24
Using the CommonNet Data Map .......................................................... 31
Ethernet Configuration .......................................................................... 34
Downloading a File from PC to the Module ........................................... 35
Modbus TCP/IP Protocol Configuration MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 18 of 78 ProSoft Technology, Inc.
September 1, 2010
2.1 Installing ProSoft Configuration Builder Software
You must install the ProSoft Configuration Builder (PCB) software to configure
the gateway. You can always get the newest version of ProSoft Configuration
Builder from the ProSoft Technology website.
1 Open your web browser and navigate to http://www.prosoft-
technology.com/pcb
Installing ProSoft Configuration Builder from the ProSoft website
2 Click the DOWNLOAD HERE link to download the latest version of ProSoft
Configuration Builder.
3 Choose S
AVE or SAVE FILE when prompted.
4 Save the file to your Windows 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 Product CD-ROM, included in the package
with your gateway.
1 Insert the ProSoft Solutions Product CD-ROM into the CD-ROM drive of your
PC. Wait for the startup screen to appear.
Installing ProSoft Configuration Builder from the Product CD-ROM
2 On the startup screen, click PRODUCT DOCUMENTATION. This action opens a
Windows Explorer file tree window.
3 Click to open the U
TILITIES folder. This folder contains all of the applications
and files you will need to set up and configure your gateway.
4 Double-click the S
ETUP CONFIGURATION TOOL folder, double-click the
PCB_*.
EXE file and follow the instructions on your screen to install the
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.
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.
2.1.1 Using the Online Help
Most of the information needed to help you use ProSoft Configuration Builder is
provided in a Help System that is always available whenever you are running
ProSoft Configuration Builder. The Help System does not require an Internet
connection.
To view the help pages, start ProSoft Configuration Builder, open the H
ELP
menu, and then choose CONTENTS.
MNET ♦ ProLinx Gateway Modbus TCP/IP Protocol Configuration
Modbus TCP/IP Interface Module Driver Manual
ProSoft Technology, Inc. Page 19 of 78
September 1, 2010
2.2 Configure the Gateway
2.2.1 Configuring Module Parameters
1 Click on the [+] sign next to the gateway icon to expand gateway information.
2 Click on the
[+] sign next to any icon to view gateway information and
configuration options.
3 Double-click any
icon to open an Edit dialog box.
4 To edit a parameter, select the parameter in the left pane and make your
changes in the right pane.
5 Click OK
to save your changes.
2.2.2 Printing a Configuration File
1 Select the gateway icon, and then click the right mouse button to open a
shortcut menu.
2 On the
shortcut menu, choose VIEW CONFIGURATION. This action opens the
View Configuration window.
3 On the View Configuration window, open the F
ILE menu, and choose PRINT.
This action opens the Print dialog box.
4 On the Print dialog box, choose the printer to use from the drop-down list,
select printing options, and then click OK.
Modbus TCP/IP Protocol Configuration MNET ♦ ProLinx Gateway
Driver Manual Modbus TCP/IP Interface Module
Page 20 of 78 ProSoft Technology, Inc.
September 1, 2010
2.3 [MNET Servers]
This section contains database offset information used by the servers when
accessed by external clients. These offsets can be utilized to segment the
database by data type.
2.3.1 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.
2.3.2 Float Start
0 to 32767
This parameter defines the first register of floating-point data. All requests with
register values greater-than or equal to this value will be considered floating-point
data requests. This parameter is only used if the Float Flag is enabled. For
example, if a value of 7000 is entered, all requests for registers 7000 and above
will be considered as floating-point data.
2.3.3 Float Offset
0 to 4999
This parameter defines the start register for floating-point data in the internal
database. This parameter is used only if the Float Flag is enabled. For example,
if the Float Offset value is set to 3000 and the float start parameter is set to 7000,
data requests for register 7000 will use the internal Modbus register 3000.
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