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6.2 Thermal resistance and thermocouple module wiring diagram
7.
Terminal wiring diagram
+
-
+
-
+
-
Cu50
TC0
TC1
H04TC
24V IN
+
-
+
-
+
-
+
-
Cu50
TC0
TC1
H08TC
+
-
+
24V IN
+
-
TC4
TC5
GND
RT0M
RT0+ RT0- RT1M
H04RC
DC
RT3M
+ 24V IN -
IN
RT2M
RT0M
RT0+
RT1M
RT1+
RT1-
DC
+ 24V IN -
RT6M
IN
RT4M
8.
Module parameter table（CR code is corresponding to the Modbus register address）
8.1 Parameter table for digital temperature and humidity modules
Note: CR code is corresponding to the Modbus register address, the gray parts are read-only ,the white parts are readable and
writable.
CR code
00H
Low byte for module code, and high byte for module version number
01H
Communication address
Communication protocol: The low 4-bit of the low byte: 0 - N,8,2 For RTU，1 - E,8,1 For RTU，2 - O,8,1 For RTU，3 - N,7,2 For ASCII，
02H
4 - E,7,1 For ASCII，5 - O,7,1 For ASCII，6 - N,8, 1 For RTU
The high 4-bit of the low byte: 0 – 2400，1 – 4800，2 – 9600，3 – 19200，4 – 38400，5 – 57600，6 - 115200
03H~06H
Module name
07H~08H
Default IP address: 192.168.1.111
09~0AH
Reserve
0BH
High byte subnet mask （b3~b0,1 indicates 255, 0 indicates 0, for example, subnet mask 255.255.255.0, b3~b0=1110） , low byte reserved
0CH~0EH
Reserve
Error code: 0-Normal, 1-Illegal firmware identity, 2-Incomplete firmware, 3-System data access exception, 4-No external 24V power
0FH
supply
10H~13H
Temperature input value of channel 1~4
14H~17H
Humidity input value of channel 1~4
Signal type of channel 1~4 （ 0-DS18B20, RW1820,
18H~1BH
DS1990，1-SHT1x, SHT7x）
1CH
Using identification of engineering value
1DH~20H
Data lower-limit of channel 1~4
21H~24H
Data upper-limit of channel 1~4
+
-
+
-
A+
B-
GND
TC2
TC3
RS485
+
-
+
-
A+
B-
GND
TC2
TC3
RS485
-
+
-
+
-
TC6
TC7
A+
B-
RS485
RT1+ RT1-
RT3+
RT3-
RT2+
RT2-
RT0-
GND
A+
RT2M
RT2+
RT2- RT3M
RT3+
H08RC
RT6+
RT6-
RT7M
RT7+ RT7-
RT4+
RT4- RT5M
RT5+ RT5-
H04DT function description
Haiwell PLC - Temperature & Humidity Module User Manual
+
-
+
-
+
-
+
-
Cu50
TC0
TC1
TC2
H04TC2
L N
+
-
+
-
+
-
+
-
Cu50
TC0
TC1
TC2
H08TC
+
-
+
-
+
L N
TC4
TC5
TC6
GND
RT0M
RT0+ RT0- RT1M
H04RC2
AC
L
N
RT3M
IN
RT2M
RT2+
B-
RS485
RT3-
RT1M
AC
L
IN
CR code
10H~1FH
Temperature value in 1~16 path of channel 1
20H~2FH
Temperature value in 1~16 path of channel 2
30H
A/D data bits of channel 1
31H
A/D data bits of channel 2
Temperature disconnection alarm in 1~16 path of channel 1,
32H
each bit indicates 1 channel, 0- normal, 1- disconnection
Temperature disconnection alarm in 1~16 path of channel 2,
33H
each bit indicates 1 channel, 0- normal, 1- disconnection
6 / 23
+
-
A+
B-
GND
TC3
RS485
+
-
A+
B-
GND
TC3
RS485
-
+
-
TC7
A+
B-
RS485
RT1+ RT1-
RT3+
RT3-
RT2-
RT0M
RT0+
RT0-
RT1+
RT1-
RT2M
RT2+
RT2- RT3M
H08RC2
N
RT6M
RT6+
RT6-
RT4+
RT4- RT5M
RT4M
H32DTfunction description
Vdd+
Vdd+
Vdd-
Vdd-
CLK0
DT0
DT0
DT1
DT1
H04DT
H32DT
Vdd+
A+
Vdd-
B-
CLK2
GND
DT2
24V
DT3
0V
GND
A+
B-
RS485
RT3+
RT3-
RT7M
RT7+ RT7-
RT5+ RT5-
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