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The i-7540D CAN-Ethernet Gateway
Quick Start User Guide
1. Introduction
This manual introduces the user to the methods used to
implement the i-7540D module into their applications in a quick and
easy way. This will only provide with the basic instructions. For more
detailed information, please refer to the i-7540D user manual located
on the ICPDAS CD-ROM or download it from the ICPDAS web site:
Fieldbus_CD:\CAN\Converter\i-7540D\ or
http://www.icpdas.com/products/Remote_IO/can_bus/i-7540.htm
The goal of this manual is focused on helping users to quickly
familiarize themselves with the i-7540D module and the
CAN-Ethernet communication gateway. Here, we use two i-7540D
modules (called the i-7540D_A and the i-7540D_B) as the example
will demonstrate how to use the i-7540D modules. The architecture
of this example is depicted below.
When the i-7540D receives a valid message, with the ASCII
strings format from Ethernet port, it converts this message into a
CAN message and transmits it into the CAN network. Based on the
same reasoning, when a CAN message is received via the i-7540D,
the CAN message will be transferred to a message by using the
ASCII strings format through the Ethernet port.
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2. Hardware Installation
Users need to make a hardware connection between the CAN
devices before the application. The details of this are illustrated
below:
Step1
: Set-up the 120Ω terminator resistor of module A and B.
Before you continue, if you have changed the settings from
default then it is necessary to open the cover for each
i-7540D and re-configure their JP3 jumpers to enable them
again, as shown in below figure. However if the i-7540D’s
still have their default settings then it is not necessary to
open and reset them because the default configuration is
enabled.
Enable (default),
Step2: Power connection for the i-7540D_A and i-7540D_B.
Connect the (R)Vs+ and (B)GND pins of the i-7540D module
to the DC power supply (10~30VDC).
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Step3: Ethernet port connection:
Connect the Ethernet ports of the i-7540D_A, i-7540D_B and
the PC to the hub with standard network cable respectively.
Step4: CAN bus connection:
Connect the CAN ports of these two i-7540D modules by
using the following structure.
3. The i-7540D Parameters Configuration
Before starting the i-7540D gateway tests, users need to
configure the Ethernet & CAN parameters via the i-7540D Utility tool.
The details of this procedure are shown below.
Step1: The default network setting of the i-7540D is shown below.
IP: 192.168.255.1
Mask: 255.255.0.0
Gateway: 192.168.0.1
So, before communicate with the i-7540D, you must change
the PC’s local area network same as the i-7540D.
Step2: After changing the PC’s local area network setting, you must
use the i-7540D Utility to make the “IP” of these two i-7540D
different to each other. The i-7540D Utility tool is located in
the CAN_CD:\\can\converter\i-7540\utility folder on the
companion CD-ROM or can be downloaded from the web
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site:
http://www.icpdas.com/products/Remote_IO/can_bus/i-7540.htm
Step3: Click the “Connect” button to connect with the i-7540D_B.
These steps are shown in the following figure.
Step4: Click the “Connect” button. If this process is successful, the
CAN Parameters
i-7540D Utility shows the i-7540D_A communication
information as below.
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Step5: After connecting with the i-7540D_A, you can modify the
CAN parameters and network status of it. The CAN
parameters and network status of i-7540D_A and i-7540DB
are setting as following table.
i-7540D_A i-7540D_B
Specification: 2.0A
Specification: 2.0A
CAN parameters
Network status
CAN baud rate: 1M bps
ACC: 00 00 00 00
ACM: FF FF FF FF
Err Response: No
Time-stamp Response: No
IP: 192.168.255.1
Mask: 255.255.0.0
Gateway: 192.168.0.1
CAN baud rate: 1M bps
ACC: 00 00 00 00
ACM: FF FF FF FF
Err Response: No
Time-stamp Response: No
IP: 192.168.255.2
Mask: 255.255.0.0
Gateway: 192.168.0.1
Note: The network status changed after resetting the
system of these i-7540Ds.
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4. Testing the i-7540D by using the i-7540D Utility
Step1: Run the i-7540D Utility, I7540D.exe, two times. Then
duplicate i-7540D windows will be displayed on the screen.
One is named as Utility A and the other is called Utility B.
Step2: Click the “Connect” icon to open the connection dialog.
Key-in the IP of these i-7540Ds and press the “Connect”
button to connect with them.
Step3: After connecting with them, Utility A is shown in the below
figure and Utility B will be similar to Utility A.
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Step4: Check the “Use CAN Message” checkbox and input the
① ②
value to the “CAN Message” frame on Utility A. Click the
“Send” button. Then, the Utility will automatically transfer
these CAN messages to the ASCII command string with
ASCII 0x0d, and send it out through the PC’s Ethernet
Socket_A port. After the i-7540D_A receives this command,
It will transfer the ASCII message to the CAN message. So,
the i-7540D_B will receive the CAN message transmitted
from i-7540D_A. Then, convert this CAN message to the
ASCII message and send it out to the Ethernet Socket_B
port on the PC. Detailed steps of this are shown in the
following figure.
Utility A Utility B
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Send : 99S
Step5: In “Send command to 7540D” frame, Users can directly type
the ASCII command string, “99S”,”99C”,”99RA”, to get/set
the status of the 7540D. The sample picture below is using
command, “99S”, to get the module status of 7540D.
Response : !80800000
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