CAN-ETH
CAN/Ethernet
gateway
User manual
UMCANETH-1901
CAN-ETH
CAN/Ethernet gateway: User manual
Copyright © 2019 proconX Pty Ltd. All rights reserved.
No part of this material may be reproduced or transmitted in any form or by any means or used to make any derivative work without
express written consent from the copyright holders.
proconX is a trademark of proconX Pty Ltd. CANopen is a registered trademark of CAN in Automation e.V. All other product and brand
names mentioned in this document may be trademarks or registered trademarks of their respective owners.
Disclaimer
proconX Pty Ltd makes no warranty for the use of its products, other than those expressly contained in the Company’s standard warranty
which is detailed in the Terms and Conditions located on the Company’s Website. The Company assumes no responsibility for any errors
which may appear in this document, reserves the right to change devices or specifications detailed herein at any time without notice,
and does not make any commitment to update the information contained herein. No licenses to patents or other intellectual property
of proconX are granted by the Company in connection with the sale of proconX products, expressly or by implication. proconX products
are not authorized for use as critical components in life support devices or systems.
Support & product feedback
We provide an electronic support and feedback system for our proconX products. It can be accessed through the following web link:
http://www.proconx.com/support
Your feedback and comments are always welcome. It helps improving this product.
Contact
For further information about the CAN-ETH product or this document please contact us at:
proconX Pty Ltd
Unit 7 / 14 Argon St
Sumner QLD 4074
Australia
Tel +61 7 3376 3911
Website: http://www.proconx.com/caneth
Contents
Important user information ......................................................................................... v
Safety Precautions ................................................................................................ v
Document conventions ........................................................................................ vi
1 Introduction ............................................................................................................. 1
Features ................................................................................................................ 2
Quick start checklist ............................................................................................. 2
2 Description ............................................................................................................... 3
LED indicators ...................................................................................................... 3
3 Installation ................................................................................................................ 5
Regulatory notes .................................................................................................. 5
Unpacking, handling and storage ........................................................................ 5
Before connecting anything ................................................................................. 5
DIN rail mounting and removal ........................................................................... 6
Mounting rules .................................................................................................... 6
Powering the CAN-ETH ........................................................................................ 7
Wiring the CAN interface ..................................................................................... 7
Connecting Ethernet ............................................................................................ 8
Connecting to the diagnostic port ....................................................................... 8
4 Ethernet & IP configuration ................................................................................... 11
IP setup using a web browser and a cross-over network cable .......................... 11
IP setup using a terminal program like HyperTerminal ....................................... 12
Temporarily changing the IP settings on your PC ............................................... 13
5 Web browser based management ......................................................................... 15
Connecting to the CAN-ETH ............................................................................... 15
Monitoring and diagnostic ................................................................................ 16
Device status .............................................................................................. 16
CAN communication status ........................................................................ 17
Finding the firmware version and serial number ........................................ 18
Configuring and commissioning ........................................................................ 19
Configuring Ethernet and IP ....................................................................... 19
Configuring CAN and CANopen ................................................................. 20
Remote restarting the device ..................................................................... 20
6 Protocol Description ............................................................................................... 23
UDP Datagram ................................................................................................... 23
Example ...................................................................................................... 24
7 Decommissioning ................................................................................................... 25
Disconnecting ..................................................................................................... 25
Disposal .............................................................................................................. 25
A Specifications ......................................................................................................... 27
Dimensions ......................................................................................................... 28
Glossary ..................................................................................................................... 29
Index .......................................................................................................................... 31
Figures
2.1 Location of connectors .......................................................................................... 3
5.1 Device management and configuration via the web browser .............................. 15
UMCANETH-1901 iii
Tables
5.2 Overview page .................................................................................................... 16
5.3 CAN communication status page ........................................................................ 17
5.4 About page ......................................................................................................... 18
5.5 Ethernet and IP settings page ............................................................................. 19
5.6 IP settings changed confirmation ........................................................................ 20
5.7 Restart device page ............................................................................................. 20
5.8 Restart confirmation page ................................................................................... 21
6.1 Structure of encapsulated CAN messages ........................................................... 23
A.1 Enclosure dimensions .......................................................................................... 28
2.1 LED diagnostic codes ............................................................................................ 4
3.1 Power supply connector pinout ............................................................................ 7
3.2 CAN connector pinout .......................................................................................... 7
3.3 Ethernet connector pinout .................................................................................... 8
3.4 Diagnostic port connector pinout ......................................................................... 9
6.1 Elements of a UDP datagram .............................................................................. 23
6.2 Elements of a CAN frame ................................................................................... 23
6.3 Example CAN message ........................................................................................ 24
iv UMCANETH-1901
Important user information
This manual explains how to install, operate and configure a CAN-ETH. This device may
only be used for the applications described in this document.
These instructions are intended for use by trained specialists in electrical installation
and control and automation engineering, who are familiar with the applicable national
standards and safety procedures.
Safety Precautions
ELECTRICAL HAZARD
• This equipment must be installed and serviced only by qualified personnel. Such
work should be performed only after reading this entire set of instructions.
• Before performing visual inspections, tests, or maintenance on this equipment,
disconnect all sources of electric power. Assume that all circuits are live until they
have been completely de-energized, tested, and tagged. Pay particular attention
to the design of the power system. Consider all sources of power, including the
possibility of backfeeding.
• Apply appropriate personal protective equipment and follow safe electrical
practices.
• Turn off all power supplying the equipment in which the CAN-ETH is to be
installed before installing, wiring or removing the CAN-ETH.
• Always use a properly rated voltage sensing device to confirm that power is off.
• The successful operation of this equipment depends upon proper handling,
installation, and operation. Neglecting fundamental installation requirements
may lead to personal injury as well as damage to electrical equipment or other
property.
Important user information
Failure to follow these instructions could result in death or serious injury!
UMCANETH-1901 v
Document conventions
Throughout this manual we use the following symbols and typefaces to make you aware
of safety or other important considerations:
Acronym This typeface is used to introduce acronyms or product
Command This typeface is used to represent commands, prompts, in-
Indicates a potentially hazardous situation that, if not
avoided, could result in death or serious injury.
Indicates a potentially hazardous situation that, if not
avoided, could result in damage to equipment.
Indicates information that is critical for successful application and understanding of the product.
Provides other helpful user information that does not fall in
above categories.
Provides supplemental user information.
names.
put fields and filenames. In the context of programming
it is used for functions, variable names, constants or class
names.
Placeholder This typeface is used to represent replacable text. Replace-
able text is a placeholder for data you have to provide, like
filenames or command line arguments.
User input This typeface is used to represent data entered by the user
or buttons.
Screen output
Screen output or program listing
vi UMCANETH-1901
Chapter 1.Introduction
The CAN-ETH is a CAN to Ethernet gateway specifically designed to interface CAN
networks with TCP/IP networks. The gateway features a CAN and an Ethernet port and
can be mounted on a DIN rail. It encapsulates CAN messages into UDP packets and
transports them via Ethernet. The gateway can operate in peer-to-peer or broadcast
modes.
Introduction
Common applications include:
• CAN bus length extensions
• CAN to DSL bridging
• Wireless networking of CAN networks
UMCANETH-1901 1
Features
The CAN-ETH gateway provides the following key features:
• UDP encapsulation for CAN messages
• Peer-to-peer mode
• Broadcast mode
• 8 CAN receive filters
• Low configuration overhead, just an IP address and CAN bitrate to set-up
• Embedded web server for easy configuration and commissioning using a web browser
• Firmware upgradeable via Ethernet
• Status LEDs for power, Ethernet link, device status and communication status
• DIN rail mountable
• 24 V DC (10-30 V) power supply
Quick start checklist
• Read this set of instructions properly and in its entirety.
• Mount the unit.
• Connect the power. Do not connect yet CAN bus or serial ports.
• Configure the Ethernet communications settings with a web browser (using an
Ethernet crossover cable) or with a terminal program like HyperTerminal (using a null
modem cable)
• Configure the CAN bus settings.
• Configure the serial line communication settings.
• Configure the operational aspects of the device.
• Wire CAN bus.
• Wire serial line interfaces.
2 UMCANETH-1901
Chapter 2.Description
TOP VIEW
BOTTOM VIEW
FRONT VIEW
The power and CAN terminals are placed on the top side of the unit. The RS-232 and
Ethernet connectors are placed on the bottom side of the unit as shown in the following
illustration:
Description
LED indicators
Figure2.1:Location of connectors
Clear front cover
Diagnostic port connector
Ethernet connector
DIN rail clip
Power LED
Ethernet link LED
Device status LED
Communication status LED
Power terminals
CAN connector
Four LEDs located at the front panel indicate the status of the CAN-ETH. The LEDs assist
maintenance personnel in quickly identifying wiring or communication errors.
A LED test is exercised at power-up, cycling each LED off, green and then red for
approximately 0.25 seconds. At the same time the power-on self test of the device is
performed.
UMCANETH-1901 3
The following table outlines the indicator condition and the corresponding status after
the power-on self-test has been completed:
LED Function Condition Indication
Power Power Off No power applied to the device.
Green Power supply OK
Link Ethernet link Off No Ethernet link
Green Ethernet link OK
Status1 Device status Off The device has an unrecoverable fault; may need replacing.
Flashing green at 1 s
rate
Green The device is operating in normal condition.
Flashing red at 1 s rate Device operational but has a fault listed which requires acknowledg-
Red The device has an unrecoverable fault; may need replacing. Flashing
Table 2.1: LED diagnostic codes
Device operational but needs commissioning due to configuration
missing, incomplete or incorrect.
ment.
sequence and rate of Status2 LED indicates fault class.
4 UMCANETH-1901
Chapter 3.Installation
Regulatory notes
1. The CAN-ETH is suitable for use in non-hazardous locations only.
2. The CAN-ETH is not authorized for use in life support devices or systems.
3. Wiring and installation must be in accordance with applicable electrical codes in
accordance with the authority having jurisdiction.
4. This is a Class A device and intended for commercial or industrial use. This
equipment may cause radio interference if used in a residential area; in this case it
is the operator’s responsibility to take appropriate measures.
5. The precondition for compliance with EMC limit values is strict adherence to the
guidelines specified in this set of instructions. This applies in particular to the area
of grounding and shielding of cables.
Installation
FCC Notice (USA only)
This equipment has been tested and found to comply with the limits for a Class A
digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide
reasonable protection against harmful interference when the equipment is operated
in a commercial environment. This equipment generates, uses, and can radiate radio
frequency energy and, if not installed and used in accordance with the instruction
manual, may cause harmful interference to radio communications. Operation of this
equipment in a residential area is likely to cause harmful interference in which case the
user will be required to correct the interference at his own expense.
Industry Canada Notice (Canada only)
This Class A digital apparatus complies with Canadian ICES-003.
Unpacking, handling and storage
1. Please read this set of instructions. carefully before fitting it into your system.
2. Keep all original packaging material for future storage or warranty shipments of
the unit.
3. Do not exceed the specified temperatures.
Before connecting anything
1. Before installing or removing the unit or any connector, ensure that the system
power and external supplies have been turned off.
2. Check the system supply voltage with a multimeter for correct voltage range and
polarity.
UMCANETH-1901 5
3. Connect the power supply cable and switch on the system power. Check if the
2
1
Click
2
1
Power LED is lit.
4. Turn off system power.
5. Connect all I/O cables.
6. Once you are certain that all connections have been made properly, restore the
power.
DIN rail mounting and removal
The CAN-ETH gateway is designed to be mounted on a 35 mm DIN rail according to DIN/
EN 50022. The enclosure features a 35 mm profile at the back which snaps into the DIN
rail. No tools are required for mounting. Please observe the rules outlined in the section
called “Mounting rules”.
To mount the unit on a DIN rail, slot the top part of the
CAN-ETH into the upper guide of the rail and lower the
enclosure until the bottom of the red hook clicks into
place.
Mounting rules
The enclosure provides protection against solid objects according to IP20 / NEMAType1
protection rating. When mounting the unit observe the following rules:
• No water splash and water drops
• No aggressive gas, steam or liquids
To remove the CAN-ETH from the DIN rail, use a screw
driver as a lever by inserting it in the small slot of the red
hook and push the red hook downwards. Then remove
the unit from the rail by raising the bottom front edge of
the enclosure.
• Avoid dusty environments.
6 UMCANETH-1901
• Avoid shock or vibration
• Do not exceed the specified operational temperatures and humidity range.
V+
V-
CAN_L
GND
GND
1
6
• Mount inside an electrical switchboard or control cabinet.
• Make sure there is sufficient air ventilation and clearance to other devices mounted
next to the unit.
• Observe applicable local regulations like EN60204 / VDE0113.
Powering the CAN-ETH
Before connecting power please follow the rules in the section called “Safety Precautions” and the section called “Before connecting anything”.
Power is supplied via a 3.81 mm 2-pin pluggable terminal block located at the top side
of the mounted unit (refer to Figure2.1, “Location of connectors”). The following table
and picture shows the power terminal socket pinout:
Installation
Pin Signal Function
1 V+ Positive voltage supply (10 - 30 V DC)
2 V- Negative voltage supply, DC power return
Table 3.1: Power supply connector pinout
Make sure that the polarity of the supply voltage is correct before connecting any
device to the serial and CAN ports! A wrong polarity can cause high currents on the
ground plane between the V- power supply pin and the CAN port and serial port
ground pins, which can cause damage to the device.
Wiring the CAN interface
The CAN connector is a male 9-pin D-sub type located at the top side of the mounted
unit (refer to Figure2.1, “Location of connectors”). It has industry standard CiA DS-102
pinout as shown in the following table and picture:
Pin Signal Function
1 NC
2 CAN_L CAN_L bus line
3 CAN_GND CAN ground
4 NC
5 NC
6 CAN_GND CAN ground
7 CAN_H CAN_H bus line
8 NC
9 NC
Table 3.2: CAN connector pinout
UMCANETH-1901 7
• The network must be terminated at both ends with its characteristic impedance,
TX+
TX-
RX-
RX+
1
typically a 120 Ohm 1/4 W resistor.
• Maximum number of electrically connected CAN nodes is 64 1.
• Maximum CAN cable length is 250 m (820 ft) and is derated depending on bit rates
and cable type.
• Stub connections off the main line should be avoided if possible or at least be kept as
short as possible. Stub connections must not have terminating resistors.
• To ensure a high degree of electromagnetic compatibility and surge protection the
cable should be twisted pairs and shielded. An additional cable conductor or pair may
be used for the CAN_GND reference.
Do not connect the cable shield to the CAN_GND pins or the connector shell! Use
an external chassis ground connection to terminate the shield.
Connecting Ethernet
The following table describes the 10BASE-T Ethernet RJ-45 connector pinout:
Pin Signal Function
1 TX+ Non-inverting transmit signal
2 TX- Inverting transmit signal
3 RX+ Non-inverting receive signal
4 Internal termination network
5 Internal termination network
6 RX- Inverting receive signal
7 Internal termination network
8 Internal termination network
Table 3.3: Ethernet connector pinout
• We recommend to use Category 5 UTP network cable.
• Maximum cable length is 100 m (3000 ft).
Connecting to the diagnostic port
The device has a RS-232 interface which is used as a diagnostic port and only active after
power-up of the device. It allows configuration of the IP settings and reset of the settings
to factory defaults via a terminal program.
The Diagnostic port connector is a male 9-pin D-sub type located at the bottom side of
the mounted unit (refer to Figure2.1, “Location of connectors”). It has industry standard
1
The number of logically adressable units may be less.
8 UMCANETH-1901
Installation
GND
TDX
CTS
DTR
RI
RXD
RTS
1
6
CD
EIA-574 data terminal equipment (DTE) pinout as shown in the following table and
picture:
Pin Signal Function Direction
1 DCD Data carrier detect in
2 RXD Receive data in
3 TXD Transmit data out
4 DTR Data terminal ready out
5 GND Signal ground
6 DSR Data set ready in
7 RTS Request to send out
8 CTS Clear to send in
9 RI Ring indicator in
Table 3.4: Diagnostic port connector pinout
• Maximum cable length is 15 m (50 ft) or a length equal to a line capacitance of 2500
pF, both at the maximum standard bit rate of 20 kbps. If operating at higher bit rates
the maximum cable length drops to 3 m (10 ft) at a bit rate of 57.6 kbps.
• To assure a high degree of electromagnetic compatibility and surge protection the
RS-232 cable should shielded. The shield shall be connected to an external chassis
ground at the either or both ends, depending on the application.
• The shield must not be connected to the GND pin.
To connect the CAN-ETH to a PC (Personal Computer) or any other device with data
terminal equipment (DTE) pinout you need a null-modem or cross-over cable.
UMCANETH-1901 9
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10 UMCANETH-1901
Chapter 4.Ethernet & IP configuration
Before configuring the CAN-ETH, obtain a unique static IP address, subnet mask, and
default gateway address from your network administrator.
The factory default IP address of the CAN-ETH is 169.254.0.10 which is in the Automatic
Private IP Addressing (APIPA) address range.
There are several methods of configuring the unit’s IP address:
1. Removing your PC from your corporate network and using a cross-over network
cable (see the section called “IP setup using a web browser and a cross-over network
cable”).
2. Via the diagnostic port and a terminal program like HyperTerminal (see the section
called “IP setup using a terminal program like HyperTerminal”).
3. Leaving your PC connected to your corporate network and temporarily changing the
IP settings on your PC to match the subnet of the CAN-ETH (see the section called
“Temporarily changing the IP settings on your PC”).
Ethernet & IP configuration
In order to connect to the CAN-ETH via TCP/IP, your PC must be on same IP subnet
as the gateway. In most situations this means that the first three numbers of the
IP address have to be identical.
IP setup using a web browser and a cross-over network cable
This method applies only to operating systems like Windows, which support APIPA
(Automatic Private IP Addressing). It also requires your PC to be configured for DHCP. If
your computer is configured with a static IP address, follow the procedure in the section
called “Temporarily changing the IP settings on your PC”.
1. Disconnect your PC from your corporate network. If your computer is configured for
DHCP it should now automatically fall back to use a default IP address from the APIPA
range 169.254.x.x (Windows PCs only).
2. Connect an Ethernet crossover cable from the CAN-ETH to the computer.
3. Start Internet Explorer.
4. In the address box, type 169.254.0.10 and then press Enter.
5. Click Configuration… and then Ethernet & IP in the menu on the left side of
the page.
6. Enter the IP address, subnet mask, and gateway address assigned to your CAN-ETH,
then click Save.
7. Reconnect your computer to your corporate network.
UMCANETH-1901 11
IP setup using a terminal program like HyperTerminal
DIAG MODE
Ver: x.y
S/N: 1234
MAC: 00:50:C7:67:71:97
IP Address: 169.254.0.10
Subnet Mask: 255.255.0.0
Gateway Address: 0.0.0.0
>SETIP
IP Address (169.254.0.10): 10.0.0.100
Subnet Mask (255.255.0.0): 255.255.255.0
Gateway Address (0.0.0.0): 0.0.0.0
RUN MODE
1. Connect a null modem RS-232 cable between your PC and the CAN-ETH's diagnostic
port.
2. In Windows XP, click Start, point to All Programs, point to Accessories, point
to Communications, and then click HyperTerminal.
3. When HyperTerminal starts, it opens a dialog box and asks for a name for the new
connection. Enter a name (for example, deviceconfig) then click OK.
4. The Connect to dialog opens. Select the COM port you will be using in the Connect
using drop-down list box, then click OK.
5. Select 9600, 8, None, 1, None in the COM Properties dialog, then click OK.
6. HyperTerminal is now connected to the serial line.
7. Keep the space bar pressed in HyperTerminal and power-cycle your device at the
same time.
8. A menu should appear after one or two seconds showing device information, the
current IP configuration and a > prompt.
9. Type SETIP, then press Enter within 10 seconds after the prompt is shown:
10.The device will show current values and prompt for new values for IP address, net
mask and gateway address. Enter the new values and press Enter. A key press must
be received at least every 10 seconds otherwise the device will go back to RUN MODE
and resume normal operation.
11.The gateway will return to the main prompt. Type X and press Enter to leave DIAG
MODE and resume normal operation indicated with RUN MODE.
12 UMCANETH-1901
Temporarily changing the IP settings on your PC
This method involves manually assigning an IP address to your PC in the same subnet as
the gateway. The default subnet of the gateway is 169.254.0.0/16.
1. Connect the CAN-ETH to your Ethernet network.
2. On a Windows PC, open the Control Panel and double-click on Network
Connections. Right-click on the Network Connection associated with your network
adapter and select Properties:
Ethernet & IP configuration
This will show the Local Area Connection Properties Dialog:
UMCANETH-1901 13
3. Select the Internet Protocol (TCP/IP) entry and click on Properties to open
the TCP/IP Properties dialog as shown below:
4. Write down your current settings so they can be restored later.
5. Select Use the following IP address and configure a static IP address in
the same subnet as the device, for example 169.254.0.1 and the subnet mask
255.255.0.0. Click OK to save the changes.
6. Start Internet Explorer.
7. In the address box, type 169.254.0.10 and then press Enter.
8. Click Configuration… and then Ethernet & IP in the menu on the left side of
the page.
9. Enter the IP address, subnet mask, and gateway address assigned to your CAN-ETH,
then click Save.
10.Restore your computer’s original settings.
14 UMCANETH-1901
Web browser based management
Chapter 5.Web browser based management
The CAN-ETH incorporates an embedded web server. This allows you to connect to the
device and monitor and configure it using a web browser. Most browsers should work,
provided they support JavaScript. We recommend Internet Explorer 6.0 or higher.
Connecting to the CAN-ETH
Once you made sure that your PC is configured to be on the same subnet as the CANETH, start your web browser. In the address box, type the IP address of your device
(169.254.0.10 is the default), and then press Enter. (See Chapter 4, Ethernet & IP
configuration)
The web browser will establish communication with the embedded web server and an
overview page similar to the following picture will appear:
Figure5.1:Device management and configuration via the web browser
Gateway IP address
Main menu
Configuration sub-menu
Information area
Use the menu bar shown on the left side to navigate the different pages.
UMCANETH-1901 15
In order to connect to the CAN-ETH via TCP/IP, your PC must be on same IP subnet
as the gateway. In most situations this means that the first three numbers of the
IP address have to be identical.
Monitoring and diagnostic
The CAN-ETH offers several web pages which allow monitoring of the status of the
different communication networks and the device performance.
Device status
The Overview page shows the principal device status as shown in the following picture:
Figure5.2:Overview page
The value shown in the Device row represents the device status register which keeps
track of run-time faults. All run-time faults are latched and must be reset by the user.
The following faults can be listed here:
OK
The device is fault free.
Watchdog reset
This warning indicates that the device was reset by it’s internal watchdog supervision
circuit.
Brown out reset
This warning indicates that the device was reset by it’s internal supply voltage
monitoring circuit. This fault occurs when the supply voltage drops below the lower
limit.
Device out of memory
This warning indicates that the internal dynamic memory has been exhausted and
due to this a certain function could not be completed.
Device configuration data write failure
This alarm indicates that the configuration data could not be written to the nonvolatile memory. Configuration data changes will be lost once the device is powercycled or reset.
Reset to factory defaults
This alarm indicates that the device' configuration data was reset to factory defaults.
The device requires re-commissioning.
16 UMCANETH-1901
The CAN controller status indicates the status of the CAN interface and can be in
one of the following states:
ACTIVE
The CAN bus is fault free.
PASSIVE
CAN’s built in fault confinement mechanism has set the node to error passive state
due to a large number of errors on the CAN bus. This warning indicates a wiring error.
BUS-OFF
CAN’s built in fault confinement mechanism has set the node to bus-off state due
to excessive errors on the CAN bus. This alarm indicates a wiring error. The CAN-ETH
will not transmit or receive any message on the CAN bus once entered this state. The
device needs to be manually restarted on order to recover from this fault.
CAN communication status
Web browser based management
The CAN Status page shows status and statistics about the CAN bus traffic. These
values provide valuable information used to troubleshoot CAN problems. This page is
automatically updated every 5 seconds.
Figure5.3:CAN communication status page
This page shows accumulated readings since the CAN-ETH was last activated or
reset. If power to the CAN-ETH is lost, all cumulative values are reset to zero.
The CAN communication channel between a Woodward CANopen based control and the
CAN-ETH can be in one of the following states:
OK
The CAN communication channel with the Woodward CANopen based control has
been established. The Woodward device is cyclically sending visualisation data via
its TXPDO.
UMCANETH-1901 17
WAIT
The presence of a supported Woodward CANopen based control has been detected
however the CAN-ETH is currently waiting to receive a complete visualisation data set.
TIME-OUT
No CANopen PDO was received for a period of 1 second. A Woodward control must
be configured to transmit cyclically visualisation data using a TXPDO with a specific
COB-ID number and the correct Data Protocol.
The following statistics are maintained:
Messages received
A counter that increments each time an inbound CANopen PDO matching the shown
COB-ID is successfully received.
Messages sent
A counter that is incremented each time a SDO message is sent.
The cumulative diagnostic data is reset when the device is power cycled or reset. The
data is also reset by pressing the Clear Counter button.
Finding the firmware version and serial number
Click on the About menu entry on the menu bar to show the product information as
shown below:
Figure5.4:About page
This product information is important for service and support inquiries. The following
product information is provided:
Product name
The name of the product.
Hardware version
CAN-ETH hardware version.
Firmware version
The firmware version that is installed on the CAN-ETH.
18 UMCANETH-1901
Serial number
The serial number of the CAN-ETH. The serial number is specific to your device.
Configuring and commissioning
The configuration pages are accessed by clicking on the Configuration… menu entry
on the menu bar which then expands a configuration sub-menu. All configuration
settings are kept in the device' non-volatile memory.
If you make changes to any settings, remember to save each page before changing
to a different page!
Configuring Ethernet and IP
Select the Configuration→Ethernet & IP sub-menu from the menu bar to open
the Ethernet and IP settings which are shown below:
Web browser based management
Figure5.5:Ethernet and IP settings page
The following Ethernet parameters are shown:
MAC address
The device' unique MAC address. This number is hard coded and cannot be changed.
The following Internet protocol (IP) settings can be entered:
IP address
The IP address assigned to this device.
Subnet mask (also known as indexterm2:[network mask])
If you have a router, enter the subnet mask for the segment to which this device is
attached.
UMCANETH-1901 19
Gateway address
If your network segment has a router, enter its IP address here. Otherwise leave the
address as 0.0.0.0.
Once you click Save the new settings are stored and applied instantly. The new settings
are confirmed with the following page:
Figure5.6:IP settings changed confirmation
Please write down the new IP address so you are able to communicate with the
device in the future!
Configuring CAN and CANopen
The CAN-ETH gateway itself does not require any CANopen configuration. No Node-ID is
allocated for the CAN-ETH because it operates as a CANopen consumer and client only.
However the CANopen settings of the connected Woodward controls must be configured
accordingly. (Refer to ???)
Remote restarting the device
You can perform a remote restart of the device from the web interface. A remote restart
is similar to power cycling the device. Possibly connected clients are disconnected and
communication is interrupted until the device has rebooted.
To perform a remote restart, click on the Configuration sub-menu and then click on
the Restart menu entry. This will open the device restart page as shown below:
Figure5.7:Restart device page
20 UMCANETH-1901
Web browser based management
Click on the Restart button to perform a restart of the device. The restart is confirmed
with the following notification:
Figure5.8:Restart confirmation page
Please allow a few seconds before continuing working with the device as it has to fully
start-up first, before being able to respond to further web browser requests.
After a remote restart a Watchdog reset alarm is shown on the device' home page.
This is a side-effect of the remote restart procedure and the alarm shall be ignored
and cleared.
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Chapter 6.Protocol Description
MagicId
Id
8 bytes
4 bytes
1 byte 1 byte
1 byte 1 byte 1 byte
Version
Cnt
Cnt
CanFrames
CanBytes
ExtFlag RtrFlag
Options
Cnt x 15 bytes
8 bytes
0 - 128 bytes
UDP Datagram
CanFrame
The CAN-ETH gateway sends and receives CAN frames via TCP/IP using UDP datagrams.
UDP was chosen over TCP as UDP is similar to CAN, a connectionless protocol.
The implemented protocol is conceptually easy to understand, easy to implement,
efficient and gives high performance.
UDP Datagram
The default UDP port is 11898.
One UDP datagram can contain up to 16 CAN frames. How CAN messages are embedded
in a UDP datagram is shown in the following drawing:
Protocol Description
Figure6.1:Structure of encapsulated CAN messages
A CAN-ETH UDP datagram containes the following fields:
Position Designator Content
0 MagicId The ASCII characters "ISO11898"
8 Version Version number of this datagram specification. Set to 1.
9 Cnt Number of CAN frames embedded in this UDP message. Range: 1 to 16.
10 CanFrames Variable size array of the CAN frames.
10 + Cnt x 15 Options Array with option bytes. Length can be 0 to 128. Currently not used, should be empty.
Table 6.1: Elements of a UDP datagram
An encapuslated CAN frame contains the following fields:
Position Designator Content
0 Id CAN indentifier as 32-bit integer (least significant byte first, little-endian format)
4 Cnt Number of data bytes used in the CanBytes array. Range: 0 to 8.
5 CanBytes Array of CAN bytes (least significant byte first). Always 8 bytes. If less than 8 bytes
transmitted, the unused bytes are zero filled.
13 ExtFlag 0/1 Flag which indicates if CAN identifier is 11 bit or 29 bit.
14 RtrFlag 0/1 Flag which indicates a remote transmission frame.
Table 6.2: Elements of a CAN frame
UMCANETH-1901 23
Example
The CAN message 18h 22h 3Ah 8Fh 77h 12h 88h 7Dh with identifier 181h is
encoded as shown in this example:
Position Value Description
0 49h The ASCII character "I"
1 53h The ASCII character "S"
2 4Fh The ASCII character "O"
3 31h The ASCII character "1"
4 31h The ASCII character "1"
5 38h The ASCII character "8"
6 39h The ASCII character "9"
7 38h The ASCII character "8"
8 1 Version number 1
9 1 Frame count of 1
10 181h CAN ID
14 8 Number of valid CAN bytes
15 18h CAN byte 1
16 22h CAN byte 2
17 3Ah CAN byte 3
18 8Fh CAN byte 4
19 77h CAN byte 5
20 12h CAN byte 6
21 88h CAN byte 7
22 7Dh CAN byte 8
23 0 Extended message flag: Standard Message
22 0 Remote transmission flag: No RTR
Table 6.3: Example CAN message
24 UMCANETH-1901
Chapter 7.Decommissioning
Before disconnecting the CAN-ETH unit please follow the rules in the section called
“Safety Precautions”.
Disconnecting
1. Ensure that the system power and external supplies have been turned off.
2. Disconnect power supply plug.
3. Disconnect all I/O cables.
4. Remove the CAN-ETH from the DIN rail following the procedure described in the
section called “DIN rail mounting and removal”.
Decommissioning
Disposal
This product must be disposed of at a specialized electronic waste recycling facility.
Do not dispose of in domestic waste.
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AppendixA.Specifications
Product name CAN-ETH
Interfaces
Ethernet 1
Serial ports 1 for diagnostics (RS-232)
CAN 1
User interface
LED indicators Power (green), Ethernet link (green), 2 status (bi-color red/green)
Monitoring & configuration Web browser based
Diagnostic
High availability features Watchdog supervision, brown-out detection
CAN interface
Connector male 9-pin D-sub, CiA DS-102 pin-out
Physical layer ISO 11898
Isolation non-isolated
Speed 10, 20, 33.333, 47.619, 50, 83.333, 95.238, 100, 125, 250, 500, 800 kbit/s, 1
Mbit/s
Max. number of connected nodes 64
Diagnostic port
Connector male 9-pin D-sub, DTE, EIA-574 pin-out
Physical layer EIA-232-F
Isolation n/a
Signals RXD, TXD, RTS, CTS, DTR, DSR, DCD, RI
Speed 9600 bps
Protocols ASCII terminal
Ethernet port
Connector 8-pin RJ-45 socket for Cat 5 UTP
Physical & Data Link Layer Layer IEEE 802.3i 10BASE-T
Isolation 1.5 kV galvanic
Speed 10 Mbit/s
Max. cable length 100 m (328 ft)
Ethernet frame types 802.3
Protocols UDP, HTTP, IP, TCP, ARP
Concurrent connections 2 HTTP
Power supply
Connector 3.81 mm 2-pin pluggable terminal block header
Voltage 10-30 V DC
Current 30 mA typical @ 24 V DC
Intrinsic consumption 750 mW
Electromagnetic compatibility
Emissions (radiated and conducted) AS/NZS CISPR 22 / EN 55022 (Class A)
Immunity EN 55024
Electrostatic discharge EN 61000-4-2
Specifications
UMCANETH-1901 27
Radiated RF EN 61000-4-3
101.0 mm
120.0 mm
3.98 in
4.72 in
0.89 in
22.5 mm
101.0 mm
3.98 in
Fast transients EN 61000-4-4
Conducted RF EN 61000-4-6
Enclosure
Material Self-extinguishing PC/ABS blend (UL 94-V0)
Mounting 35 mm DIN rail (EN 60715)
Classification / Type rating IP 20 / NEMA Type 1
Cooling Convection
Environmental
Operating temperature 0 to 60 °C / 32 to 140 °F
Storage temperature -25 to 85 °C / -13 to 185 °F
Humidity 10 to 95% non condensing
Operating ambience Free from corrosive gas, minimal dust
Physical
Dimensions 101 x 22.5 x 120 mm / 3.98 x 0.886 x 4.72 in
Weight 0.13 kg / 0.287 lb
Compliance
Australia C-Tick
Europe CE, RoHS
USA FCC Part 15 (Class A)
Canada ICES-003 (Class A)
Dimensions
FigureA.1:Enclosure dimensions
28 UMCANETH-1901
Glossary
10BASE-T
10 Mbit/s twisted pair Ethernet standard.
Standardized in IEEE 802.3i.
Glossary
EIA-574
Standard for the pinout of serial D-sub
connectors.
EMC
Electromagnetic compatibility
APIPA
Automatic Private IP Addressing
CAN
Controller area network. Standardized in ISO
11898.
CANopen
Internationally standardized (EN 50325-4)
CAN-based higher-layer protocol for
embedded control systems.
CiA
CAN in Automation. International industry
organization involved in the standardization
of CAN protocols.
CiA DR-303-1
Standard for CAN cabling
CiA DS-102
Standard for the pinout of CAN connectors
Class A
Class A equipment is that used in
commercial or light industrial environments.
DIN
German Institute for Standardization
DIN rail
35 mm wide mounting bracket standardized
in DIN/EN 50022.
DTE
Data terminal equipment. DTE and DCE
devices have different pinouts for RS-232
connectors. A PC for example is a DTE.
EIA
Electronic Industries Alliance. Standard
organisation for serial communication.
EIA-232
Standard for serial transmission of data
between two devices, also known as RS-232
and V.24.
EMI
Electromagnetic interference
EN
European standard
ESD
Electrostatic discharge
Ethernet
The standard for local area networks
developed jointly by Digital Equipment
Corp., Xerox, and Intel. Ethernet is used as
the underlying transport vehicle by several
upper-level protocols, including TCP/IP.
Fieldbus
Digital communication network used to
connect process instrumentation and
control systems.
Frame
A single block of data transmission from a
device.
Gateway
A network device that passes data between
different networks or fieldbusses. It is
different to a Bridge in that protocol
conversion occurs above the application
layer rather than in the datalink layer.
Gateway address
The IP address of the gateway or router used
to access the Internet from the local are
network.
HMI
Human-Machine Interface
IEEE
Institute of Electrical and Electronics
Engineers
IP
Internet Protocol
UMCANETH-1901 29
IP
Ingress Protection Rating according IEC
60529. Standard for various grades of
electrical enclosures.
IP address
A numeric address used by computer hosts
to transmit and receive information over the
Internet.
ISO
International Standards Organisation
KiB, KiByte
1024 bytes. The SI standard recommends
the usage of the binary unit prefix Ki for
1024.
MAC address
Every piece of Ethernet hardware has a
unique number assigned to it called it’s MAC
address. MAC addresses are administered
and assigned by the IEEE organization.
NEMA
National Electrical Manufacturers
Association. NEMA defines standards for
various grades of electrical enclosures.
used to restrict transmissions to certain
subnets.
Switch
A device that facilitates transmissions
between nodes in a star-formed network
TCP/IP
Transport Control Protocol/Internet
Protocol. Connection-orientated transfer
protocol.
TIA
Telecommunications Industry Association.
US trade association and standardization
commitee.
UL 94
Plastics flammability standard released by
Underwriters Laboratories of the USA.
Watchdog
A fail-safe mechanism which resets a device
if it becomes unresponsive.
Node
A communications device on the network.
PC/ABS
Polycarbonate-ABS. Widely used
thermoplastic material.
Physical Layer
This layer defines everything required to
make a physical connection to the network
or fieldbus.
PLC
Programmable Logic Controller
RS-232
See EIA-232.
SCADA
Supervisory Control and Data Acquisition
Subnet mask
A numeric address used in conjunction with
an IP address to segment network traffic;
30 UMCANETH-1901
Index
Index
Ethernet, 8, 19
settings, 19
A
About, 18
ACTIVE, 17
APIPA, 11
B
Brown out reset, 16
BUS-OFF, 17
C
cable
RS-232, 9
cable length
CAN, 8
Ethernet length, 8
RS-232, 9
CAN, 7, 7
Class A, 5
connector
CAN, 7
Ethernet, 8
location, 3
power, 7
RS-232, 9
cross-over network cable, 11
D
default IP address, 11
Device configuration data write failure, 16
Device out of memory, 16
device status register, 16
DIN rail
mounting, 6
removal, 6
Disconnecting, 25
Disposal, 25
E
electronic waste, 25
embedded web server, 15
EMC, 5
enclosure
DIN rail clip, 3
front cover, 3
mounting, 6
red hook, 6
removal, 6
F
faults, 16
features, 2
Firmware version, 18
G
Gateway address, 20
grounding, 5
H
Hardware version, 18
HyperTerminal, 12
I
IP
settings, 11, 20
IP address, 19
J
JavaScript, 15
L
LED, 3, 3
M
MAC address, 19
Messages received, 18
Messages sent, 18
mounting, 6
rules, 6
N
nodes
maximum
CAN, 8
P
PASSIVE, 17
pinout
CAN, 7
Ethernet, 8
power, 7
RS-232, 9
power, 7
Product name, 18
R
recycling, 25
UMCANETH-1901 31
remote restart, 20
removal, 6
Reset to factory defaults, 16
restart, 20
RJ-45, 8
RS-232, 9
run-time faults, 16
S
Serial number, 19
settings
Ethernet, 19
IP, 11, 20
shield, 8, 9
shielding, 5
shock, 6
Specifications, 27
storage, 5
Stub connections, 8
Subnet mask, 19
supply voltage, 7
T
temperature
operating, 7
terminal program, 12
termination
CAN, 8
TIME-OUT, 18
twisted pairs, 8
U
Unpacking, 5
V
ventilation, 7
vibration, 6
W
WAIT, 18
Watchdog reset, 16
Watchdog reset alarm, 21
32 UMCANETH-1901
Notes
Notes
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