SONBEST SM1410C User manual

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SM1410C
CAN bus temperature and humidity sensor
User Manual
File Version: V22.1.20
SM1410C using the standard CAN Bus,easy access to PLC，DCS and other instruments or systems
for monitoring temperature,humidity state quantities.The internal use of high -precision sensing core and
related devices to ensure high reliability and excellent long-term stability,can be customized
RS232,RS485,CAN,4-20mA,DC0~5V\10V,ZIGBEE,Lora,WIFI,GPRS and other output methods.
Technical Parameters
Technical parameter
Parameter value
Brand
SONBEST

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Temperature measuring range
-50℃~120℃
Temperature measuring accuracy
±0.5℃@25℃
Humidity measuring range
0~100%RH
Humidity accuracy
±3%RH @25℃
Communication Interface
CAN
Default rate
250kbps
Power
DC9~24V 1A
Running temperature
-40~80°C
Working humidity
5%RH~90%RH
In the case of broken wires, wire the wires as shown in the figure. If the pr oduct itself has no leads, the
core color is for reference.
Communication Protocol
The product uses the CAN2.0B standard frame format. The standard frame information is 11 bytes,
including two parts of information and the first 3 bytes of the data part are the information part. The default
node number is 1 when the device leaves the factory, which means The text identification code is
ID.10-ID.3 in the CAN standard frame, and the default rate is 50k. If other rates are required, they can be
modified according to the communication protocol.
The device can directly work with various CAN converters or USB acquisition modules. Users can also
choose our industrial-grade USB-CAN converters (as shown in the figure above). The basic format and
composition of the standard frame are as follows As shown in the table.
位
7
6
5
4
3
2
1
0
Byte 1
FF
FTR
X
X
DLC.3
DLC.2
DLC.1
DLC.0
Byte 2
ID.10
ID.9
ID.8
ID.7
ID.6
ID.5
ID.4
ID.3
Byte 3
ID.2
ID.1
ID.0
x
x
x
x
x
Byte 4
d1.7
d1.6
d1.5
d1.4
d1.3
d1.2
d1.1
d1.0
Byte 5
d2.7
d2.6
d2.5
d2.4
d2.3
d2.2
d2.1
d2.0
Byte 6
d3.7
d3.6
d3.5
d3.4
d3.3
d3.2
d3.1
d3.0
Byte 7
d4.7
d4.6
d4.5
d4.4
d4.3
d4.2
d4.1
d4.0
Byte 11
d8.7
d8.6
d8.5
d8.4
d8.3
d8.2
d8.1
d8.0
Byte 1 is the frame information. The 7th bit (FF) indicates the frame format, in the extended frame,
FF=1; the 6th bit (RTR) indicates the type of the frame, RTR=0 indicates the data frame , RTR=1 means
the remote frame; DLC means the actual data length in the data frame. Bytes 2~3 are valid for 11 bits of
the message identification code. Bytes 4~11 are the actual data of the data frame, invalid for the remote
frame . For example, when the hardware address is 1, as shown in the figure below, the frame ID is 00 00
00 01, and the data can be responded by sending the correct command.
1. Query data
Example: To query all 2 data of 1# device channel 1, the host computer sends the command: 01 03 00
00 00 02.
Frame type
CAN frame ID
mapping
address
function code
starting
address
data length
00 01
01
01
03
00 00
02
Response frame: 01 03 04 07 3A 0F 7D.

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Frame type
CAN frame ID
mapping
address
function code
data length
data
Response
frame
00 00
01
03
04
08 AD 0F 7D
In the query response of the above example: 0x03 is the command number, 0x4 has 4 data, the first
data is 08 AD converted into decimal system: 2221, because the module resolution is 0.01, this The value
needs to be divided by 100, that is, the actual value is 22.21 degrees. Each data occup ies two bytes, that is,
an integer variable. The actual value needs to be divided by 100 on the basis of this value. Similarly, 0F 7D
is the second data. Its value is 3965, that is, the true value is 39.65.
2. Change Frame ID
You can use the master station to reset the node number by command. The node number ranges from
1 to 200. After resetting the node number, you must reset the system. Because the communication is in
hexadecimal format, the data in the table Both are in hexadecimal format.
For example, if the host ID is 00 00 and the sensor address is 00 01, the current node 1 is changed to
the 2nd. The communication message for changing the device ID is as follows: 01 06 0B 00 00 02.
Frame type
Frame ID
Set Address
Function id
fixed value
target frame ID
Command
00 01
01
06
0B 00
00 02
Return frame after correct setting: 01 06 01 02 61 88. The format is as shown in the table below.
Frame ID
Set Address
Function id
source frame
ID
current frame
ID
CRC16
00 00
01
06
01
02
61 88
The command will not respond correctly. The following is the command and reply message to change
the Set Address to 2.
3. Change device rate
You can use the master station to reset the device rate through commands. The range of t he rate
number is 1~15. After resetting the node number, the rate will take effect immediately. Because the
communication is in hexadecimal format, the rate in the table The numbers are in hexadecimal format.
Rate value
actual rate
rate value
actual rate
1
20kbps
2
25kbps
3
40kbps
4
50kbps
5
100kbps
6
125kbps
7
200kbps
8
250kbps
9
400kbps
A
500kbps
B
800kbps
C
1M
D
33.33kbps
E
66.66kbps
The rate not in the above range is not currently supported. If you have special requirements, you can
customize it. For example, the device rate is 250k, and the number is 08 according to the above table. To
change the rate to 40k, the number of 40k is 03, the operation communication message is as follows: 01 06
00 67 00 03 78 14, as shown in the figure below.
After the rate modification is performed, the rate will change immediately, and the device will not return
any value. At this time, the CAN acquisition device also needs to switch the corresponding rate to
communicate normally.
4. Return frame ID and rate after power-on
After the device is powered on again, the device will return the corresponding device address and rate

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information. For example, after the device is powered on, the reported message is as follows: 01 25 01 05
D1 80.
Frame ID
device
address
function code
current frame
ID
current rate
CRC16
00 00
01
25
00 01
05
D1 80
In the response frame, 01 indicates that the current frame ID is 00 01, and the speed rate value 05
indicates that the current rate is 50 kbps, which can be obtaine d by looking up the table.
Disclaimer
This document provides all information about the product, does not grant any license to intellectual
property, does not express or imply, and prohibits any other means of granting any intellectual property
rights, such as the statement of sales terms and conditions of this product, other issues. No liability is
assumed. Furthermore, our company makes no warranties, express or implied, regarding the sale and use
of this product, including the suitability for the specific use of the product, the marketability or the
infringement liability for any patent, copyright or other intellectual property rights, etc. Product
specifications and product descriptions may be modified at any time without notice.
Contact Us
Company: Shanghai Sonbest Industrial Co., Ltd
Address:Building 8,No.215 North east road,Baoshan District,Shanghai,China
Web: http://www.sonbest.com
Web: http://www.sonbus.com
SKYPE: soobuu
Email: [e-mail]
Tel: [phone]