ZLG CANSwitch-AN2S2 User manual

Product User Manual
CANSwitch-AN2S2 User Manual
High-Performance Dual-CAN to Ethernet Switch
User Manual
UM01010101 V1.03 Date: 2019/03/26
Category
Contents
Keywords
Dual CAN Dual Ethernet Switch High Performance
Description
The CANSwitch-AN2S2 high-performance dual-channel
CAN to Ethernet switch uses ZLG Electronics' advanced
CAN bus technologies and operating system technologies.
It has two conversion modes: Hub and Converter. It is
unique in ensuring data integrity and real time.
©2021 Guangzhou ZLG Microelectronics Technology Corp.,Ltd.

CANSwitch-AN2S2
High-Performance Dual-CAN to Ethernet Switch User Manual
©2021 Guangzhou ZLG Microelectronics Technology Corp.,Ltd.
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User Manual
Revision History
Version
Date
Reason
V1.00
December
6, 2015
Created
V1.01
August 11,
2017
Changed the company name and sales network information
V1.02
March 14,
2019
Updated the document header and footer and "Sales and Service Network"
content, and added the "Disclaimer" content
V1.03
March 26,
2019
Updated product images

CANSwitch-AN2S2
High-Performance Dual-CAN to Ethernet Switch User Manual
©2021 Guangzhou ZLG Microelectronics Technology Corp.,Ltd.
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Contents
1. Functions .....................................................................................................1
1.1 Overview............................................................................................................1
1.1.1 Powerful Hardware.....................................................................................2
1.1.2 Perfect Functions .......................................................................................2
1.2 Product Specifications.......................................................................................3
1.2.1 LAN.............................................................................................................3
1.2.2 CAN............................................................................................................3
1.2.3 Power Interface..........................................................................................3
1.2.4 Configuring the Interface............................................................................4
1.2.5 Software Features......................................................................................4
1.2.6 EMC Characteristics...................................................................................4
1.2.7 Electrical Parameters.................................................................................4
1.3 Mechanical Dimensions.....................................................................................5
2. Hardware Interfaces.....................................................................................6
2.1 Appearance .......................................................................................................6
2.2 Power Interface..................................................................................................7
2.3 RS232 Configuration Interface..........................................................................7
2.4 Reset Button, Default Restoration Button and Function Switch .......................7
2.5 Ethernet Interface..............................................................................................8
2.6 CAN Port............................................................................................................8
2.7 LED Indicator.....................................................................................................9
3. Quick Use in Hub Mode (Hub Mode).........................................................10
3.1 Device Configuration Method..........................................................................10
3.1.1 Configuring the Device Using the Serial Port ..........................................10
3.1.2 Configuring the Device Using the Network Port ......................................10
3.2 System Block Diagram....................................................................................10
3.3 Configuring the Device....................................................................................11
3.4 CANTest Software Operation..........................................................................14
3.5 Test Result.......................................................................................................16
4. Quick Use in Converter Mode (Converter Mode).......................................20
4.1 Device Configuration Method..........................................................................20
4.1.1 Configuring the Device over the Serial Port.............................................20
4.1.2 Configuring the Device over the network port..........................................20
4.2 IPAddress Operation ......................................................................................20
4.2.1 Default IPAddress....................................................................................20
4.2.2 Obtaining the Device IP address..............................................................20
4.2.3 PC and Device Network Segment Detection...........................................22
4.2.4 Adding the IPAddress (Windows7 Used as an Example).......................22
4.2.5 Modifying the Local IPAddress................................................................25
4.3 TCP Server Mode............................................................................................25
4.3.1 System Block Diagram.............................................................................25

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4.3.2 Configuring the CANSwitch-AN2S2 Device.............................................27
4.3.3 TCP&UDP Software Operation................................................................27
4.3.4 CANTest Software Operation...................................................................30
4.3.5 Test Result................................................................................................31
4.4 TCP Client Mode .............................................................................................34
4.4.1 System Block Diagram.............................................................................34
4.4.2 Configuring the CANSwitch-AN2S2 Device.............................................36
4.4.3 TCP&UDP Software Operation................................................................36
4.4.4 CANTest Software Operation...................................................................38
4.4.5 Test Result................................................................................................40
4.5 UDP Mode.......................................................................................................43
4.5.1 System Block Diagram.............................................................................43
4.5.2 Configuring the CANSwitch-AN2S2 Device.............................................45
4.5.3 TCP&UDP Software Operation................................................................45
4.5.4 CANTest Software Operation...................................................................47
4.5.5 Test Result................................................................................................49
5. ZNetCom Software Configuration..............................................................53
5.1 Installing the Configuration Software...............................................................53
5.2 Obtaining Device Configurations.....................................................................55
5.3 Modifying Device Configurations.....................................................................60
5.4 Configuring Parameters...................................................................................61
5.4.1 Configuration in Hub Mode (Hub Mode)..................................................61
5.4.2 Configuration in Converter Mode (Converter Mode)................................63
5.5 Saving Restored Settings................................................................................73
5.5.1 Saving Settings ........................................................................................73
5.5.2 Restoring Settings....................................................................................73
5.6 Upgrading the Firmware..................................................................................74
6. Disclaimer..................................................................................................77
Appendix A LAN port working port data conversion format............................78
Appendix B Data Conversion Format of TCP Notification Port in CAN Port
State ..............................................................................................................80

CANSwitch-AN2S2
High-Performance Dual-CAN to Ethernet Switch User Manual
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1. Functions
1.1 Overview
The CANSwitch-AN2S2 is a high-performance industrial-grade Ethernet and
CAN-bus data conversion device developed by Guangzhou ZLG Electronics Co., Ltd. It
integrates two CAN-bus interfaces and two Ethernet interfaces, and provides a mature
and stable TCP/IP protocol stack. It helps you easily interconnect CAN-bus network and
Ethernet network, further expanding the scope of CAN-bus network. It can also be
configured in hub mode for device cascading.
The CANSwitch-AN2S2 is an industrial-grade product and works in a temperature
range of -40℃to +85℃. It has two 10M/100M/1000M adaptive Ethernet interfaces, and
the maximum baud rate of two CAN-bus interfaces is 1 Mbps. The CANSwitch-AN2S has
two modes: in the hub mode, it can realize cascading and automatic networking without
configuration, as shown in Figure 1.1; in the converter mode, it has TCP Server, TCP
Client, UDP, and other working modes. Each CAN port supports six IP segments to set a
maximum of 200 TCP or UDP connections. By using the configuration software, you can
flexibly set configuration parameters. Figure 1.2 shows a typical application.
Figure 1.1 Typical application in Hub mode

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Figure 1.2 Typical application in Converter mode
1.1.1 Powerful Hardware
⚫Adopt TI Cortex-A8 800MHz high-performance processor;
⚫10M/100M/1000M adaptive Ethernet interface, 2 kV electromagnetic isolation;
⚫Two CAN ports, 2.5 kVDC withstand voltage isolation;
⚫CAN port baud rate 5k-1,000kbps can be set arbitrarily;
⚫Embedded hardware watchdog;
⚫The rated power supply voltage range is 9-36 V DC ;
⚫The limit power supply voltage range is 7.5-40 V DC ;
⚫Operating temperature: -40°C to +85°C;
⚫Humidity: 5%-95% RH, no condensation;
⚫Rugged metal housing, SECC metal (1.1 mm);
⚫Specifically designed for industrial and military environments.
1.1.2 Perfect Functions
In Hub mode:
⚫Cascading is supported.A maximum of 32 levels can be cascaded;
⚫Each CAN port can be set to a different baud rate;
⚫Two-way transparent transmission of CAN data and Ethernet data (for the format,
see Appendix A);
⚫Support the acceptance and filtering of CAN ports. You can select the ID range to
be received, so as to filter unwanted CAN frames;
⚫Each CAN port can be configured into different working modes, which can be
flexibly used in various fields;
⚫Each CAN port opens a diagnostic port, and the host computer can obtain the
error status of the corresponding CAN port by connecting this port;
⚫You can use the Windows platform configuration software to configure operating
parameters. The parameters can be imported and exported;
⚫Provide Windows configuration software function library for free, including
easy-to-useAPI function library, which helps you write configuration software;
⚫Support local system firmware upgrade.
In Converter mode:
⚫Static or dynamic IP acquisition;
⚫Heartbeat and timeout disconnection;
⚫The working port is fixed, and the destination IP address and port can be set;
⚫After the network is disconnected, the connection resources are automatically
restored, and the TCP connection is established reliably;
⚫TCP supports a maximum of 200 connections, which can satisfy six groups of
users and manage one CAN port;
⚫In UDP mode, each CAN port supports six groups of target IPsegments. Multiple
users can manage a CAN device at the same time;
⚫Supported protocols include ETHERNET, ARP, IP, ICMP, UDP, DHCP, DNS, and

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TCP;
⚫Compatible with SOCKET working methods (TCP Server, TCP Client, UDP, etc.).
The writing of the host computer communication software follows the standard
SOCKET rules;
⚫Each CAN port can be set to a different baud rate;
⚫Two-way transparent transmission of CAN data and Ethernet data (for the format,
see Appendix A);
⚫The Ethernet receive buffer is adjustable. You can choose the most suitable
balance between real time and large-capacity buffering;
⚫Flexible CAN port data framing settings meet various subcontracting needs;
⚫Support the acceptance and filtering of CAN ports. You can select the ID range to
be received, so as to filter unwanted CAN frames;
⚫Each CAN port can be configured into different working modes, which can be
flexibly used in various fields;
⚫Each CAN port opens a diagnostic port, and the host computer can obtain the
error status of the corresponding CAN port by connecting this port;
⚫You can use the Windows platform configuration software to configure operating
parameters. The parameters can be imported and exported;
⚫Provide Windows platform configuration software function library for free,
including easy-to-use API function library, which helps users write their own
configuration software;
⚫Support local system firmware upgrade.
1.2 Product Specifications
1.2.1 LAN
⚫Number of LAN ports: 2;
⚫Interface type: 10M/100M/1000M Ethernet, RJ45 interface, 2 kV electromagnetic
isolation.
1.2.2 CAN
⚫Number of CAN ports: 2;
⚫Interface type: 2EDG, 90°, terminal, 2.5 kV electromagnetic isolation;
⚫Signal cable: CAN0H, CAN0L, CAN1H, CAN1L;
⚫Shielded wire: FGND;
⚫Terminal resistance wiring: R-, R+;
⚫Baud rate: 5 k-1000 kbps.
1.2.3 Power Interface
⚫Round hole socket: positive inside and negative outside;
⚫Terminal: OPEN2.

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1.2.4 Configuring the Interface
⚫RS232 interface;
⚫Two RJ45 Ethernet interfaces.
1.2.5 Software Features
⚫Supported TCP/IP protocols: ETHERNET, ARP, IP, ICMP, UDP, TCP, DHCP,
DNS.
⚫Tool software: ZNetCom configuration software (version 2.95 or later), CANtest
test tool, TCP/UDP test tool.
⚫Configuration method: Windows configuration software ZNetCom.
1.2.6 EMC Characteristics
⚫Electrostatic Discharge Immunity (ESD)
Contact discharge: +8KV Class A
Air discharge: +15KV Class A
⚫Electrical fast transient (EFT) burst immunity
Power port: +2 kV Class A
Signal port: +1 kV Class A
⚫Surge (impact) immunity
Power port (DC terminal): +1 kV Class A
Power port (adapter): +2 kV Class A
Signal port: +1 kV Class A
1.2.7 Electrical Parameters
Unless otherwise specified, the parameters listed in Table 1.1 refer to the values at
Tamb=25°C.
Table 1.1 Electrical parameters
Parameter Name
Symbol
Rating
Unit
Power voltage
VCC
+9~36V
V
Power consumption
PM
3350
mW
Operating ambient
temperature
Tamb
-40℃~85℃
℃
Storage temperature
Tstg
-40℃~85℃
℃

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1.3 Mechanical Dimensions
To install CANSwitch-AN2S2, see the appearance and mechanical dimensions (unit:
mm) provided in Figure 1.3. The figure specifies the length, width, height, and part of the
mechanical structure of the product.
Figure 1.3 CANSwitch-AN2S2 installation mechanical dimensions

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2. Hardware Interfaces
This section introduces the hardware interfaces of CANSwitch-AN2S2.
2.1 Appearance
Figure 2.1 shows the front appearance of the product. Figure 2.2 and Figure 2.3 show
the side appearance.
Figure 2.1 CANSwitch-AN2S2 front appearance
Figure 2.2 CANSwitch-AN2S2 side appearance 1
Figure 2.3 CANSwitch-AN2S2 side appearance 2

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2.2 Power Interface
CANSwitch-AN2S2 uses a 9-36 V DC power supply that is easily available at the
industrial site, and is equipped with two wiring ports. One is a round hole socket and the
other is a terminal block. Both interfaces support positive and negative connections, with
no need to confirm the positive and negative poles. Figure 2.4 shows its interface.
Figure 2.4 Power Interface
2.3 RS232 Configuration Interface
As shown in Figure 2.5, this interface is specially used to configure the
CANSwitch-AN2S2 device.
Figure 2.5 Configuring ports
2.4 Reset Button, Default Restoration Button and Function Switch
As shown in Figure 2.6, RESET is used to reset the device manually. Press it for 1
second to reset the device; DEF is used to restore factory settings. Press it for 5-10
seconds and then the system SYS is off (the SYS indicator is green). The device will
automatically reset factory settings. The CANSwitch-AN2S2 device has two functions:
Hub (hub) and Converter (converter). When the function switch is set to the corresponding
function, press the RESET key once for the function to take effect.
Figure 2.6 Reset button, default restoration button and function switch

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Tip: After default settings are restored, all current configurations will be lost. Operate
with caution.
2.5 Ethernet Interface
Figure 2.7 shows the appearance of the Ethernet (RJ45) interface of
CANSwitch-AN2S2, with four indicators. The Link indicator is green, indicating whether
the Ethernet is physically connected. If it is connected to the Ethernet, the Link indicator is
always on; the Active indicator is yellow, indicating whether there is data transmission. If
the Ethernet has data transmission, theActive indicator flashes.
Figure 2.7 Ethernet interface and indicators
Figure 2.7 shows the pin order of the Ethernet interface. Table 2.1 shows the pin
definitions.
Table 2.1 RJ45 pin definition
Pin
Signal
1
Tx+
2
Tx-
3
Rx+
4
Bi+
5
Bi-
6
Rx-
7
Bi+
8
Bi-
2.6 CAN Port
The CANSwitch-AN2S2 device has two CAN ports. Figure 2.8 shows its appearance.
It has two indicators: CAN0 and CAN1. When a device is connected, when there is data
communication; Table 2.2 describes the pin definition.
Figure 2.8 CAN interface and indicators
Table 2.2 Definition of CANSwitch-AN2S2 CAN port pins
Signal
Introduction

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CANL
CANL signal terminal of CAN
FGND
Terminals for connecting the CAN channel to the
shielding layer
CANH
CANH signal terminal of CAN
R-
120-ohm termination resistor of CAN. Connecting
the wire to R+ means enabling the internal
termination resistor
R+
120-ohm termination resistor for CAN. Connecting
the wire to R- means enabling the internal
termination resistor
Tip: The terminal resistance can be configured if R- and R+ are short-circuited with wires.
2.7 LED Indicator
The CANSwitch-AN2S2 device has six indicators, PWR, SYS, LAN0, LAN1, CAN0,
and CAN1, as shown in Figure 2.9.
Figure 2.9 Indicators
Table 2.3 describes the indicators.
Table 2.3 Description of LED indicators
LED
Description
PWR
The power indicator is always on after power on
SYS
System running indicator. When the device is not ready
to start or fails, the red indicator is steady on; when it is
running properly, the green indicator flashes
LAN0/LAN1
Active
LAN working indicator flashes when data is sent and
received
LAN0/LAN1
Link
The LAN working indicator is steady on when Ethernet
is physically connected
CAN0/CAN
1
Green indicator on or flashing: Data is sent or received
on the CAN port
Green indicator off: No data is sent or received on the
CAN port
Red indicator on: An error occurred on the CAN port
Red indicator off: No error has occurred on the CAN
port, or the error has been cleared

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3. Quick Use in Hub Mode (Hub Mode)
Devices in hub mode can implement automatic networking, and devices can be
cascaded in hub mode. This document uses three CANSwitch-AN2S2 devices for
cascading. As long as the device is configured, the CAN bus will be forwarded to the
corresponding CAN port as required. You can network independently without using
switches and other equipment.
3.1 Device Configuration Method
Turn the switch to Hub and press the reset button. After the device beeps twice, it
enters Hub mode. For details, see Section 2.4.
3.1.1 Configuring the Device Using the Serial Port
CANSwitch-AN2S2 supports using the serial port to configure the device, as shown in
Figure 3.1. The device can be configured as long as the dedicated RS232 configuration
port is connected to the PC.
Figure 3.1 Dedicated configuration port
3.1.2 Configuring the Device Using the Network Port
CANSwitch-AN2S2 supports configuration using the LAN port. Just connect one of
the network ports to the PC, as shown in Figure 3.2.
Figure 3.2 LAN port
3.2 System Block Diagram
This document uses three devices for cascading and meets the following design
requirements. The CAN signal sent by user equipment 1 and user equipment 2 can be
received by user equipment 3, user equipment 6 and user equipment 7; the CAN signal
sent by user equipment 3 can be received by user equipment 4 and user equipment 5; the
CAN signals sent by user equipment 4 and user equipment 5 can be received by all the
equipment; the CAN signal sent by user equipment 6 can be received by user equipment
1, the user equipment 2, the user equipment 3 and the user equipment 7; the CAN signal
sent by user equipment 7 can be received by user equipment 1, user equipment 2, user

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equipment 3 and user equipment 6. Figure 3.3 shows the overall system.
Figure 3.3 System block diagram in Hub mode
3.3 Configuring the Device
Search for devices. CANSwitch supports two ways to search for devices, search by
Ethernet and search by serial port: when searching by Ethernet, you can search and
configure devices even not in a network segment; when searching by serial port, the COM
port must be selected correctly. See Figure 3.4.
Figure 3.4 Searching for devices
Note: For details about how to configure the device, see 5. ZNetCom software configuration.

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Configure the three CANSwitch devices, as shown in Figure 3.5, Figure 3.6, and
Figure 3.7.
Figure 3.5 Configuration of the first CANSwitch
Be sure to submit the configuration modifications
The default password is 88888
A total of three devices are used for
networking. Select 3 as the number of
networking devices (a maximum of 32 devices
are supported for cascading); this device is the
first networking device, so select 1 as the
device number
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN0 port.
The data of CAN0 port can only be forwarded
to CAN1 port of device 1, CAN0 port of
device 3 and CAN1 port of device 3
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN1 port.
The data of CAN1 port can only be forwarded
to CAN0 port of device 2 and CAN1 port of
device 2

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Figure 3.6 Configuration of the second CANSwitch
A total of three devices are used for
networking. Select 3 as the number of
networking devices (a maximum of 32 devices
are supported for cascading); this device is the
second networking device, so select 2 as the
device number
Be sure to submit the configuration modifications
The default password is 88888
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN0 port.
The data of CAN0 port can only be forwarded
to all CAN buses
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN1 port.
The data of CAN1 port can only be forwarded
to all CAN buses

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When the configuration is successful, it will beep twice. For details about how to use
the ZNetCom software, refer to Section 5 ZNetCom software configuration.
3.4 CANTest Software Operation
We need a device equipped with a CAN port to demonstrate how the
CANSwitch-AN2S2 device realizes bidirectional transparent conversion of CAN network
data and Ethernet data. Here, select the USBCAN interface card, which is convenient to
Figure 3.7 Configuration of the third CANSwitch
Be sure to submit the configuration
modifications
The default password is 88888
A total of three devices are used for
networking. Select 3 as the number of
networking devices (a maximum of 32 devices
are supported for cascading); this device is the
third networking device, so select 3 as the
device number
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN0 port.
The baud rate should be 500K, which should
be consistent with the CAN device connected
to the CAN1 port.
The data of CAN0 port can only be forwarded
to CAN0 port and CAN1 port of device 1;
CAN1 port of device 3
The data of CAN1 port can only be forwarded
to CAN0 port and CAN1 port of device 1;
CAN0 port of device 3

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use. Its related information is available at http://www.zlg.cn.
Note: For details about how to use the CANTest software, see ZLG Electronics CAN Test Software
and Interface Function User Manual.
First, connect the CANSwitch-AN2S2 device to the PC by using a network cable, and
connect the CANSwitch-AN2S2 device to the USBCAN interface card by using a twisted
pair cable (CANH is connected, and CANL is connected. Configure a 120-ohm terminal
resistance). Then, connect the USBCAN interface card with the PC by using a USB cable.
Finally, connect power to the USBCAN interface card and the CANSwitch-AN2S2 device.
Then run the CANtest software on the PC (as shown in Figure 3.8). The CANtest test
software is available on http://www.zlg.cn/ (installation required).
Figure 3.8 Software used to test communication
After starting CANtest, select a device type. Here we use USBCAN-EU as an
example. First, we select USBCAN-EU, as shown in Figure 3.9. Then, select the "Open
Device" menu in the "Device Operation" main menu to display the device's parameter
setting interface. Pay attention to the baud rate. Click OK and start CAN, as shown in
Figure 3.10.
Figure 3.9 Selecting a device type

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Figure 3.10 Setting device parameters
If the device is connected properly, there will be no prompt. If the connection is
abnormal, an error message appears.
Figure 3.11 Starting USBCAN-E-U successfully
On the tab page of any CANtest software, click the "Send" button. You can then
receive the data you just sent on the tab page of another CANtest software.
3.5 Test Result
Open all six CAN cards, as shown in Figure 3.12.