UTEK UT-6502 Series User manual

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 1
UT-6502 Series
TCP/IP (100M fiber) to 2-port CANBUS protocol
converter
User Manual

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 2
1. Overview
UT-6502 series is a high-performance CAN-bus communication converter integrating 2
CAN interfaces and 1 Ethernet (fiber optic) interface. The converter supports 10M/100M
Ethernet network and 5Kbps~1Mbps communication rate CAN-bus interconnection, which
further extends the application range of CAN-bus and network.UT-6502 converter provides
Web configuration interface, users can flexibly set the operation parameters of UT-6502
converter. Industrial grade high standard design; isolation between communication interface
and system, with certain anti-interference and anti-surge capability, widely used in industrial
control and data communication system.
2. Product Technical Parameter
Realizes bidirectional data transmission between CAN-bus and network
Support CAN2.0 protocol
Integrated 2-CAN-bus communication interface, supporting 5Kbps-1Mbps communication rate
Integrated 1-channel 10M/100M Ethernet interface (100M fiber)
Operating voltage: 12-36V DC
Operating current: ≤ 200mA@12V
Operating temperature: -40~85°C
Storage temperature: -40~85°C
Operating humidity: 5~95% (no condensing)
Storage humidity: 5~95% (no condensing)
Isolation voltage: 1000VDC
Electrostatic protection: air 8kV, contact 6kV
Surge protection: power port: 1.2/50us common mode 2kV, differential mode 1kV
Ethernet port: 10/700us common-mode 2kV, differential-mode 1kV
3. Indicator light
PWR: red, power indicator; long light when power supply is normal.
RUN: green, system operation indicator; flashes when the system is running normally.

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 3
FDX: green, fiber optic communication indicator; flashes when there is data communication.
(fiber optic interface is available)
T/R1: green, communication indicator; lights up when CAN1 sends and receives data, and
goes out when transmitting and receiving is completed.
T/R2: green, communication indicator; when CAN2 transmit or receive data, the indicator is
on and goes off when transmitting and receiving is completed.
4. Key Definition
Reset: button, press for 3 seconds to reboot the system, press for 5 seconds to restore
the factory settings of the device
5. Pin Definition
5.1 Power supply pin definition
5.2 Label silkscreen
5.2.1 Ethernet interface
Definition
Description
V+
Power input positive
V-
Power input ground
PGND

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 4
5.2.2 Fibre optic interface
5.3 RJ45 network port definition
5.4 Terminal pin definition
3.81-4pin Phoenix terminal
RJ45
Definition
Description
1
TX+
Transmitting signal positive
2
TX-
Transmitting signal negative
3
RX+
Receiving signal positive
6
RX-
Receiving signal negative
4，5，7，8
-
-
PIN No.
PIN name
Description
PIN
No.
PIN name
Description
1
CAN1-H
CAN1-H signal
connection terminal
5
CAN2-H
CAN2-H signal
connection terminal
2
CAN1-L
CAN1-L signal
connection terminal
6
CAN2-L
CAN2-L signal
connection terminal

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 5
* When the device is used as a CAN-bus terminal, CAN matching resistor terminal 1 and terminal 2 are
shorted, equivalent to a 120R matching resistor connected to the signal line.
6. Factory parameter
7. Introduction to protocol function
7.1 CAN transmission formats are divided into CAN fixed format transmission and transparent
transmission
7.1.1 Fixed format transmission: "Format conversion" is the simplest mode of use, where the data
format is agreed to be 13 bytes, i.e. a fixed 13 bytes of serial frame data corresponding to a CAN
message. 13 bytes contain the CAN message + ID + data. By correctly configuring the frame
information (the first byte of data), standard, extended or even remote frames can be sent flexibly.
By correctly parsing the 13 bytes of the serial frame the details of the standard, extended and even
remote frames can be obtained.
Each frame is fixed at 13 bytes and must be filled with 0. A serial data frame that meets the 13 byte
format in the same serial data frame corresponds to a CAN message, and serial data frames of less than
13 bytes are not converted. So make sure that the converted serial data frames are aligned to 13 bytes.
During the conversion of serial frames to CAN messages, if the data format of a 13-byte segment of a
13-byte aligned serial data frame is not standard, the 13-byte segment will not be converted and the
subsequent data will be converted. If you find that some CAN messages are missing after conversion,
check that the 13-byte serial data format of the corresponding message does not conform to the standard
format.
3
RES1+
CAN1 matching resistor
terminal 1
7
RES2+
CAN2 matching
resistor terminal 1
4
RES1-
CAN1 matching resistor
terminal 2
8
RES2-
CAN2 matching
resistor terminal 2
Default IP
192.168.1.125
Subnet Mask
255.255.255.0
Login Account
admin
Login Password
admin

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 6
.....
1 CAN frame contains 13 bytes
Frame information: 1 byte in length, used to identify some information about the CAN frame,
such as type, length, etc.
Bit7 Bit0
FF: Identification of standard and extended frames, 1 for extended frames, 0 for standard frames.
RTR: Identification of remote frames and data frames, 1 for remote frames and 0 for data frames.
The reserved: 0. 1 cannot be written.
D3~D0: Identifies the data length of the CAN frame.
Frame ID: 4 bytes long, standard frame valid bits are 11, extended frame valid bits are 29.
Low Byte High Byte Low Byte High Byte
As above for extended frame ID numbers As above for standard frame ID numbers
Representation of 0x12345678 Representation of 0x3FF
Frame data: 8 bytes in length, valid length is determined by the value of D3 to D0 of the frame
information.
DATA1 DATA8
CAN Frame
CAN Frame
CAN Frame
CAN Frame
CAN Frame
FF
RTR
Reserved
Reserved
D3
D2
D1
D0
12h
34h
56h
78h
00h
00h
03h
FFh
11h
22h
33h
44h
55h
66h
77h
88h

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 7
As above for a representation of 8 bytes of valid data
DATA1 DATA8
As above for a representation of 6 bytes of valid data
7.1.2 Transparent transmission: "Transparent conversion" means that the converter simply converts
the data of one bus format into the data format of the other bus, without attaching data or modifying
it. This enables the exchange of data formats without changing the data content, so that the
converter is as transparent to both buses.
7.1.3 Key point：
Fixed format transmission: when sending, the ID can be customized; when receiving, the data is
the full byte sent by the other party
Transparent transmission: when sending, the ID is fixed; when receiving, the data is displayed
in the other side's data bytes only
7.1.4 Example：
i.
When fixed format: e.g. extended frame (for simplicity, the standard frame of this module also
goes in 13-byte mode, i.e.
ID<<0x000003FF)
0x
88
00
00
00
3A
11
22
33
44
55
66
77
88
At this point the ID is 0x0000003A.
ii.
In transparent format: e.g. extended frame
0x
88
00
00
00
3a
11
22
33
44
55
66
77
88
If the web configuration ID is 0x00000030 then the ID is 0x00000030.
7.2 CAN frame types are divided into data frames and remote frames.
7.2.1 Data frame type: send data to the other end; Remote frame type: send the other end ID to the
other side.
7.3 CAN frame format is divided into extended frames and standard frame
7.3.1 Extended frame ID length: 29 bits; standard frame size: 11 bits; here both extended and
standard frames are in 32-bit mode
7.3.2 Example:
iii. Extension frame
0x
88
00
00
00
3A
11
22
33
44
55
66
77
88
At this point ID=0x0000003A<0X1FFFFFFF,match
iv. Standard frame
11h
22h
33h
44h
55h
66h
00h
00h

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 8
0x
88
00
00
00
3A
11
22
33
44
55
66
77
88
At this point ID=0x0000003A<0X000003FF,match
7.4 Filter mode is divided into enable filter mode and disable filter mode
7.4.1 Enable filter mode: Here, a 32-bit filter mode is used with a filter code and a mask code as the
filtering combination
7.4.2 Off filter mode: you can receive CAN packets with any ID
7.5 CAN frame packet time
7.5.1 The range of values: (4, 999) is appropriate. The smaller the value, the faster the packet is
sealed and the faster the transmission speed.
7.6 The module communication modes are TCP and UDP, and the module operating modes are Client and
Server
7.6.1 Differences between the two communication modes：
TCP: reliable, stable, orderly, etc., recommended for large amounts of data transmission
UDP: faster, can send broadcast, etc., recommended for small amount of data transmission
7.6.2 Key point: The Network Debugging Assistant is configured to communicate in its corresponding
mode.
7.6.3 Example:
TCP Client mode ：
Module Port No.
5001
Remote Device Port No.
5005
Modular TCP/IP communication mode
TCP
Module TCP/IP operating mode
Client
Remote server IP address
192.168.1.176
At this time, the module is TCP Client, port number 5001, and the server is enabled at one end of the
network port, configured with its IP 192.168.1.176 and port number 5005, and the local IP of the server
should also be set to 192.168.1.176.
TCP Server mode ：
Module Port No.
5001
Remote Device Port No.
5005
Modular TCP/IP communication mode
TCP
Module TCP/IP operating mode
Server
Remote server IP address
N/A
At this point, the module is TCP Server, port number 5001, IP is the IP address of the device, and the client
is enabled at one end of the network port, configured with its IP as the module IP and port number 5001
UDP Client mode:
(Note: Configure the network port udp server before this mode configuration)
Module Port No.
5001
Remote Device Port No.
5005

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 9
Modular TCP/IP communication mode
UDP
Module TCP/IP operating mode
Client
Remote server IP address
192.168.1.176
At this time, the module is UDP Client, port number 5005, one end of the network port to enable the UDP
server, configure its IP to 192.168.1.176, port number 5005, and the server's local IP should also be set to
192.168.1.176.
After the configuration is complete, the module will send "udp client start receive" to the UDP server after
the reboot has taken effect, indicating that it is starting to receive data.
UDP Server mode:
Module Port No.
5001
Remote Device Port No.
5005
Modular TCP/IP communication mode
UDP
Module TCP/IP operating mode
Server
Remote server IP address
N/A
At this point, the module is the UDP Server, port number 5001, IP is the IP address of the device, and the
UDP client is enabled at one end of the network port, configured with its IP as the module IP and port
number 5001
7.7 Connection timeout setting
7.1 When the data is 0, it means that the connection never times out. When the data is other, it
means that the connection will be made within this time period, after which the connection cannot
be made. It is recommended that the connection is set to 0.
Receiving and transmitting data protocol
i. Fixed format: 13 bytes
Example: 88 00 00 00 3a 11 22 33 44 55 66 77 88
88: Frame information bits. The first 8 indicates an extended frame, a 0 indicates a standard
frame, the second 8 is the number of data bits and takes the value [1,8]
00 00 00 3a :Frame id bit. Frame id=0x0000003a, range [0, 0x1FFFFFFF] for extended
frames, [0,0x3FF] for standard frames
11 22 33 44 55 66 77 88: frame data bits, the number of data bits is the same as the second
bit of the frame information bits.
When transmitting in fixed mode.
Transmitter's command: 88 00 00 00 3a 11 22 33 44 55 66 77 88
Display on the receiving side: 88 00 00 00 3a 11 22 33 44 55 66 77 88
ii. Transparent method: 13-20 bytes
Example: 8a 00 00 00 3b 11 22 33 44 55 66 77 88 99 10
8a:Frame information bits. The first 8 indicates an extended frame, a 0 indicates a standard
frame, the second a is the number of data bits and takes the value [1,f]
00 00 00 3b :Frame id bit. Frame id=0x0000003a, range [0, 0x1FFFFFFF] for extended
frames, [0,0x3FF] for standard frames
11 22 33 44 55 66 77 88 99 10: frame data bit, the number of data bits is the same as the
second bit of the frame information bit.
When transmitting in transparent mode.
Sender's command: 8a 00 00 00 00 3b 11 22 33 44 55 66 77 88 99 10
Display on the receiving end: 11 22 33 44 55 66 77 88 99 10

Your Reliable Partner in Industrial IoT
UTEK TECHNOLOGY 10
iii. Contrast:
When sending and receiving in fixed format: fast and stable, the id of the other party is
displayed as a manually populated id of the other party, but the number of data bits
transferred is slightly less.
Transparent sending and receiving: more data bits, but slower, the id of the other party is
displayed as a fixed id of the module, configured by the web page
8. Web Operation Instructions
8.1 Login screen
The default username and password are admin
8.2 Main interface
Here you can view the current device parameters, including device name, version, network parameters
and CAN port parameter