HMS Anybus HMS-EN2MB-R User manual

Linking Device
EtherNet/IP to Modbus-TCP
USER MANUAL
scm-1202–181 2.0 en-US ENGLISH

Important User Information
Disclaimer
The information in this document is for informational purposes only. Please inform HMS Networks of any
inaccuracies or omissions found in this document. HMS Networks disclaims any responsibility or liability for any
errors that may appear in this document.
HMS Networks reserves the right to modify its products in line with its policy of continuous product development.
The information in this document shall therefore not be construed as a commitment on the part of HMS Networks
and is subject to change without notice. HMS Networks makes no commitment to update or keep current the
information in this document.
The data, examples and illustrations found in this document are included for illustrative purposes and are only
intended to help improve understanding of the functionality and handling of the product. In view of the wide range
of possible applications of the product, and because of the many variables and requirements associated with any
particular implementation, HMS Networks cannot assume responsibility or liability for actual use based on the data,
examples or illustrations included in this document nor for any damages incurred during installation of the product.
Those responsible for the use of the product must acquire sufficient knowledge in order to ensure that the product
is used correctly in their specific application and that the application meets all performance and safety requirements
including any applicable laws, regulations, codes and standards. Further, HMS Networks will under no circumstances
assume liability or responsibility for any problems that may arise as a result from the use of undocumented features
or functional side effects found outside the documented scope of the product. The effects caused by any direct or
indirect use of such aspects of the product are undefined and may include e.g. compatibility issues and stability
issues.
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Table of Contents Page
1 Preface ................................................................................................................................. 5
1.1 About This Document .......................................................................................................5
1.2 Document Conventions.....................................................................................................5
1.3 Related Documents ..........................................................................................................5
1.4 Document History ............................................................................................................6
1.5 Trademarks.....................................................................................................................6
2 About the Linking Device .................................................................................................... 7
2.1 Features.........................................................................................................................7
2.2 Data Consistency..............................................................................................................7
3 Installation........................................................................................................................... 9
3.1 External View ..................................................................................................................9
3.2 Mounting the Linking Device..............................................................................................9
3.3 Power Connector ........................................................................................................... 11
3.4 EtherNet/IP & Modbus-TCP RJ45 Connectors ...................................................................... 12
3.5 USB Connector .............................................................................................................. 12
4 Configuration..................................................................................................................... 13
4.1 Configuration Flow......................................................................................................... 13
4.2 Configuration Requirements ............................................................................................ 13
4.3 Linking Device Configuration Manager ............................................................................... 13
4.4 Modbus-TCP Client Configuration ..................................................................................... 14
4.5 Studio 5000 Configuration Example................................................................................... 15
4.6 Tag Editor Configuration.................................................................................................. 25
5 Verify Operation................................................................................................................ 29
5.1 Status LEDs ................................................................................................................... 29
6 Maintenance...................................................................................................................... 30
6.1 EMC (CE) Compliance ..................................................................................................... 30
6.2 Replace a Linking Device ................................................................................................. 30
6.3 SD Card ........................................................................................................................ 30

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A Data Transactions.............................................................................................................. 33
A.1 I/O Mapped Data ........................................................................................................... 33
A.2 Parameter Data ............................................................................................................. 33
A.3 Control/Status Word....................................................................................................... 33
A.4 Live List ........................................................................................................................ 33
A.5 Transaction Status List .................................................................................................... 34
A.6 Exception Code List ........................................................................................................ 35
B Modbus-TCP Functions ..................................................................................................... 37
C Linking Device Configuration Manager Interface ............................................................ 38
C.1 Menu Options ............................................................................................................... 38
C.2 Tag Editor Options ......................................................................................................... 38
D Modbus-TCP Client Configuration Manager .................................................................... 39
D.1 Home........................................................................................................................... 40
D.2 Configuration ................................................................................................................ 40
D.3 Tools............................................................................................................................ 46
E CIP Objects......................................................................................................................... 49
E.1 Identity Object (01h) ...................................................................................................... 49
E.2 Message Router (02h)..................................................................................................... 51
E.3 Assembly Object (04h) .................................................................................................... 52
E.4 Connection Manager (06h) .............................................................................................. 54
E.5 DLR Object (47h)............................................................................................................ 56
E.6 QoS Object (48h) ........................................................................................................... 57
E.7 ADI Object (A2h)............................................................................................................ 57
E.8 Port Object (F4h) ........................................................................................................... 58
E.9 TCP/IP Interface Object (F5h) ........................................................................................... 59
E.10 Ethernet Link Object (F6h) ............................................................................................... 61
F Technical Specification...................................................................................................... 64
F.1 Functional Earth (FE) Requirements................................................................................... 64
F.2 Power Supply ................................................................................................................ 64
F.3 Environmental Specification............................................................................................. 64
G SD Card Functionality........................................................................................................ 65
G.1 General Guidelines......................................................................................................... 65
G.2 Starting Up ................................................................................................................... 65
G.3 Easy Backup .................................................................................................................. 65
G.4 Simple Configuration Copy............................................................................................... 65
G.5 SD Card Synchronization Failure ....................................................................................... 66

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H Copyright Notices .............................................................................................................. 67

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Preface 5 (70)
1 Preface
1.1 About This Document
This document describes how to install and configure the HMS-EN2MB-R EtherNet/IP to
Modbus-TCP linking device.
For related documentation and file download, visit the support website at
www.anybus.com/support.
1.2 Document Conventions
Numbered lists indicate tasks that should be carried out in sequence:
1. First do this
2. Then do this
Bulleted lists are used for:
• Tasks that can be carried out in any order
• Itemized information
►An action
→ and a result
User interaction elements (buttons etc.) are indicated with bold text.
Program code and script examples
Cross-reference within this document: Document Conventions, p. 5
External link (URL): www.hms-networks.com
WARNING
Instruction that must be followed to avoid a risk of death or serious injury.
Caution
Instruction that must be followed to avoid a risk of personal injury.
Instruction that must be followed to avoid a risk of reduced functionality and/or damage
to the equipment, or to avoid a network security risk.
Additional information which may facilitate installation and/or operation.
1.3 Related Documents
Document Author HMS Document ID
EtherNet/IP to PROFIBUS DP Linking Device User Manual HMS SCM-1202-026
Modbus Application Protocol Specification V1.1B Modbus Organization NA
CIP Specification, Vol 1 (CIP Common) & 2 (EtherNet/IP) ODVA NA
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Preface 6 (70)
1.4 Document History
Version Date Description
2.0 2021-05–19 First release of reworked document.
This document replaces SCM-1202–008.
1.5 Trademarks
Anybus®is a registered trademark and HMS-EN2MB-R™is a trademark of HMS Networks AB. All
other trademarks mentioned in this document are the property of their respective holders.
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About the Linking Device 7 (70)
2 About the Linking Device
2.1 Features
The EtherNet/IP to Modbus-TCP linking device provides a seamless connection between an Allen-
Bradley Programmable Controller (PLC) by Rockwell Automation on EtherNet/IP and a Modbus-
TCP network. It features:
• User interface integration in Studio 5000
The configuration manager for the gateway is included in an add-on profile (AOP) for Studio
5000 and does not have to be installed separately. All network and device level
configuration is done in Rockwell Studio 5000.
• Tag level configuration
The user configures the tags used in the PLC when configuring the gateway. Process data is
automatically mapped from Modbus-TCP to EtherNet/IP without manual work.
• Automatic backup of configuration
The state of the configuration is automatically stored in the Studio 5000 project when the
configuration manager is closed, and will be retrieved next time the configuration manager
is opened.
The AOP is supported by RSLogix 5000 version 20 and later.
The linking device consists of an intelligent gateway platform, a Modbus-TCP network interface
and an EtherNet/IP network interface. The gateway connects the two network interfaces, and
forwards data from one to the other.
The linking device enables transparent data transmission between the two networks, by letting
the client on the EhterNet/IP network control the Modbus-TCP network servers.
Industrial network
Modbus-TCP network
Anybus Modbus-TCP
Master Interface
Anybus network
slave interface
2.2 Data Consistency
The linking device ensures data consistency within all connections on the EtherNet/IP side, and
within each command on the Modbus-TCP side. The EtherNet/IP side and the Modbus-TCP side
are not cyclically synchronized.
There is one assembly in each direction per connection in this linking device.
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Each of the two network interfaces exchanges data on its network through two buffers. The
linking device forwards the data internally between these buffers as shown below.
Industrial Network InterfaceModbus-TCP Network Interface
Industrial network
Modbus-TCP network
Data To
the Modbus-TCP
Network
Data From
the Modbus-TCP
Network
Data From
the Modbus-TCP
Network
Data to
the Modbus-TCP
Network
Status Word
Control Word
2.2.1 Process Data I/O Buffer
Both the incoming and outgoing buffers on the EtherNet/IP side and the incoming and the
outgoing buffers on the Modbus TCP side holds a maximum of 4096 bytes of data.
The buffers in the EtherNet/IP interface are represented by up to 10 separate class 1 connections
with a maximum of 500/496 bytes assemblies.
There is one assembly in each direction per connection in this linking device.
See also Data Transactions, p. 33.
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Installation 9 (70)
3 Installation
3.1 External View
Use the SD card slot with care. Do not use an SD card for configuration backups. A backup
of the configuration is always stored in the Studio 5000 project. The configuration in the
linking device and in Studio 5000 must match for operation. See SD Card Functionality, p.
65.
A: Power Connector
This connector is used to apply power to the
linking device. It is also possible to connect
protective earth (PE) to the power connector.
See Power Connector, p. 11 and Power Supply, p.
64.
B: SD Card Slot
This slot adds the possibility to store and load
configurations from an SD card.
Use with care. A backup of the configuration is
always stored in the Studio 5000 project. The
configuration in the linking device and in Studio
5000 must match for operation.
See SD Card Functionality, p. 65.
C: USB Port
This port adds the possibility to connect a PC to
the linking device to perform firmware upgrades.
See USB Connector, p. 12.
D: Status LEDs
See Status LEDs, p. 29.
E: DIN Rail Connector
The DIN-rail mechanism fastens the linking device
to a DIN-rail and connects the module to
protective earth (PE).
See Mounting the Linking Device, p. 9.
F: EtherNet/IP Connectors
See EtherNet/IP & Modbus-TCP RJ45 Connectors,
p. 12.
G: Modbus-TCP Connectors
2–port switch with daisy chain functionality.
See EtherNet/IP & Modbus-TCP RJ45 Connectors,
p. 12.
3.2 Mounting the Linking Device
The EtherNet/IP to Modbus-TCP Linking Device can be physically installed either by mounting it
onto a DIN-rail or, if installed in areas exposed to vibration, by mounting it on a wall for more
stability.
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3.2.1 DIN-rail Mounting
Make sure the DIN-rail fastening mechanism on the back
of the module is in a fixed and closed position, i. e. pushed
all the way up.
To mount the module, first hook it on to the DIN-rail (1),
then push it against the DIN-rail to make it snap on (2).
To unmount the module, a screwdriver is needed. Use the
screwdriver to push the DIN-rail fastening mechanism on
the back of the module down until it locks in a fixed and
open position (1). Then unhook the module from the DIN-
rail (2).
Do not leave the module with the DIN-rail fastening
mechanism in a fixed and open position. This may
eventually wear the fastening mechanism out so it cannot
be used efficiently. Be sure to push the DIN-rail fastening
mechanism back into the fixed and closed position after
demounting the module.
3.2.2 Wall Mounting
Use the wall mounting option if there is a need to place the linking device in an environment
exposed to vibration. This way of mounting the module offers more stability than the traditional
DIN-rail mounting.
: The device should be fastened in a standing-up position, to ensure a constant air flow.
When mounting the device to a wall using the wall mount option, do not forget to connect the module to
protective earth (PE) via the power connector.
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Step Description Visual Description
Open up the package containing the wall
mounting accessories.
- One metal frame
- Industrial velcro
- Four plastic vibration dampers
Remove the plastic protection from one
side of the velcro.
Attach the velcro to the metal frame.
Attach the four plastic vibration dampers
to the linking device, on the side that will
face the wall.
Remove the plastic protection from the
other side of the velcro.
Turn the device around, so that the
plastic vibration dampers face
downwards.
Fasten the metal frame to the device by
pressing the frame firmly against the
device, making the two velcro parts
attach to each other.
Attach the metal frame and the device to
a wall using screws and washers (not
enclosed).
3.3 Power Connector
Pin no Description Connector
1 +24 V DC
2 GND
3FE (Functional Earth)
Use 60/75 or 75xC copper (CU) wire only.
The terminal tightening torque must be between 5... 7 lbs-in (0.5... 0.8 Nm)
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3.4 EtherNet/IP & Modbus-TCP RJ45 Connectors
Pin no Description Connector
1 TX+
2 TX-
3 RX+
6 RX-
4, 5, 7, 8 Not connected
Housing Shield
3.5 USB Connector
Pin no Description Connector
1 +5 V Input
2USBDM (USB communication signals)
3USBDP (USB communication signals)
4Signal GND
Housing Cable shield
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4 Configuration
4.1 Configuration Flow
The linking device can only be configured from within Studio 5000. This is done by configuring
the settings of a linking device imported into the current Studio 5000 project.
A separate Modbus-TCP client configuration manager is executed to handle the configuration. It
is included as an add-on profile and integrated in Studio 5000. The configuration manager is pre-
installed as part of your Studio 5000 installation. No separate installation is needed.
The linking device configuration is always automatically stored in the Studio 5000 project when
the Modbus-TCP client configuration manager is closed. The next time the configuration
manager is opened, the stored configuration is retrieved.
The linking device is configured in the following basic steps:
1. In Studio 5000, set up and launch the HMS-EN2MB-R configuration manager (step 1–6 in
Studio 5000 Configuration Example, p. 15).
2. Configure the Modbus-TCP client. See step 7–13 in Studio 5000 Configuration Example, p.
15 and Modbus-TCP Client Configuration, p. 14.
3. Based on the client configuration, configure the tags that will be used in Studio 5000. The
configuration and status is automatically sent to Studio 5000 when the tag editor is closed.
See steps 14–16 in Studio 5000 Configuration Example, p. 15 and Tag Editor Configuration, p.
25.
4.2 Configuration Requirements
The EtherNet/IP to Modbus-TCP linking device is configured over the EtherNet/IP port using the
pre-installed add-on profile in Studio 5000.
Three requirements must be met for the configuration manager to function:
• The linking device must be powered on.
• The linking device must be connected and available from the computer with the Studio
5000 installation.
• Any switches or firewalls between the linking device and the computer with Studio
5000 must allow HTTP traffic.
This is only required to configure the device, not during operation.
4.3 Linking Device Configuration Manager
The foundation of theEtherNet/IP to Modbus-TCP linking device configuration manager is the tag
editor. It is the first view when you open the configuration manager. At first startup the editor
holds no tags.
Config Line in the bottom bar shows if the EtherNet/IP connection between the PLC and the
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linking device is online or offline. The linking device configuration cannot be changed when the
connection is online.
See Linking Device Configuration Manager Interface, p. 38 for a description of the menu options.
4.4 Modbus-TCP Client Configuration
The EtherNet/IP to Modbus-TCP linking device has a built-in Modbus—TCP client configuration
manager. The following system requirements must be met to access the configuration manager:
• Javascript enabled
• HTTP access from the computer with Studio 5000 and the linking device
Consider the following when configuring Modbus-TCP servers and transactions:
• When you have saved data to the configuration but not yet applied it, this will appear top of
the configuration manager:
• A changed configuration must be applied in order to take effect.
• A maximum of 64 Modbus-TCP servers can be added to the configuration.
• A maximum of 64 transactions can be set up to the servers in the configuration.
• The data limit is 4096 bytes input data and 4096 bytes output data, including optional
control/status word and live list.
• Modbus transactions are assembled in up to 10 Ethernet/IP Class 1 Exclusive Owner (IO)
Connections.
• Each Ethernet/IP Class 1 Exclusive Owner (IO) connection holds one input assembly of 500
bytes and one output assembly of 496 bytes.
• Only as many Ethernet/IP Class 1 Exclusive Owner (IO) connections as needed are defined
and used.
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• Transactions will be added to connections in the order they are created in the Modbus
configuration manager.
If a transaction does not fit into the remaining parts of a connection, it will be moved to the
next connection.
The bytes left in the previous connection will then be padded and left unused.
Consequently, take care when creating the Modbus transactions, to optimize the available
memory in the input and output IO areas as much as possible.
Changes made to the configuration will not be used by the linking device before they are applied and
saved.
See also Modbus-TCP Client Configuration Manager, p. 39.
See also Modbus-TCP Functions, p. 37.
4.5 Studio 5000 Configuration Example
This example will guide you through the steps to create a basic configuration for theEtherNet/IP
to Modbus-TCP linking device.
1. Start the Studio 5000 software.
Expand the I/O Configuration folder in the tree view.
Right-click Ethernet and select New Module.
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2. Select the EtherNet/IP to Modbus-TCP linking device (catalogue number: HMS-EN2MB-R)
and click Create.
3. In the New Module window, assign a name to the module. The IP address should be set via
the BOOTP-DHCP server and entered in the IP address field.
4. Click Change in the Module Definition section.
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5. In the Module Definition window, launch the configuration manager for the HMS-EN2MB-R
linking device by clicking the View and edit the network button.
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6. The foundation of the linking device configuration manager is the tag editor, and it’s the
first view to be presented in the configuration manager. Since this is a new configuration,
the editor holds no tags. See Linking Device Configuration Manager Interface, p. 38 for
descriptions of the menu options.
The first step is to configure the Modbus-TCP Client to define the process data to be sent
through the linking device. The HMS-EN2MB-R uses a built in web interface in the actual
linking device to configure the Modbus-TCP Client.
Using the built in web interface makes it mandatory to have HTTP access between the
linking device and Studio 5000 during the configuration phase, as well as using
monitoring features during operation.
Open the HMS-EN2MB-R Modbus-TCP Client configuration manager by clicking the leftmost
icon (M) in the toolbar to proceed.
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