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Haiwell PLC - Temperature & Humidity Module Application Case
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And so on, then we follow the order, from left to right continue to install sensors (adjacent sensors access interval needs more
than 10 seconds), until the 16th sensor, which will record the temperature of each channel and the serial number.
DT0
Vdd+
Vdd-
VD
D
G
N
D
D
Q
D
S1
8B
20
1#
VD
D
G
N
D
D
Q
D
S1
8B
20
2#
VD
D
G
N
D
D
Q
D
S1
8B
20
3#
VD
D
G
N
D
D
Q
D
S1
8B
20
4#
VD
D
G
N
D
D
Q
D
S1
8B
20
5#
G
N
D
D
Q
D
S1
8B
20
14#
VD
D
G
N
D
D
Q
D
S1
8B
20
15#
VD
D
G
N
D
D
Q
D
S1
8B
20
16#
. . . . . .
After the 16 sensors of channel 1 accessed, channel 2 is accessed in the same way, when accessed, we follow the way from near
to far or from far to near. After finishing the access of all sensors, we have to save the configuration parameters of H32DT module,
this step is very important! (The back will introduce the application occasions). The specific operation is as follows, in the menu
bar of remote module tool has an export function, we click export:
After export, click save
：
The above operation, the module line is connected, the parameters are also saved. Next host PLC needs to read the temperature
from the module.
H32DT can communicate with the host PLC through the parallel port, also through the 485 port, H32DT used as the remote IO, it
can communicate with the host PLC.
We can see according to the online help of PLC software - Hardware Manual - Expansion Module Parameters - Digital
Temperature And Humidity Module Parameter Table, or the above
《
8.1 Digital Temperature and Humidity Module Parameter
Table
》
, the temperature values of channels 1 and 2 exist in the module CR register.
