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Haiwell PLC - Temperature & Humidity Module Application Case
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1.10 H32DT module usage features introduction
H32DT supports sensor signal types: DS18B20, RW1820, DS1990.
Module parameters: H32DT module has 2 channels, each channel can measure the maximum 16 points of temperature, a total of
32 temperature points can be measured. Measuring temperature range: -55 ~ +125
℃
,
≤
200m distance to per channel (line
resistance 50
Ω
). So, how to use the H32DT module properly?
The following are the main points of this section:
1
Remote module tool usage;
2
How to wire sensor?
3
how to replace broken sensor?
4
how to replace broken module?
First, let's look at the hardware wiring. How to connect H32DT with the remote module tools of PLC software?
Hardware connection and power supply: PC-side USB transferred to 485 (PC with serial port can also use 232-to-485 converter),
then connected to the communication port A + B- of 485 in H32DT module. H32DT module is powered by DC24V switching power
supply. After the module is powered on, then click the menu bar tools - Remote module - Online, when online successfully, you will
see:
Click "exit", or "
×
" to exit. In the absence of sensors, the default parameters of the module are shown below:
Then, we start to access sensors (the strict wiring diagram please refer to the above digital module wiring diagram), as shown in
the following figure, we access the first sensor # 1:
