SM1410C Us er Ma nual
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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 dat a 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 f rame. 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.
