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MIW-DSTHX-2-EN-000 - 23 / 07 / 2019
10 - 10
HOLDING REGISTERS
Holding Registers
Data type
Description
Data
Values
19
Minimum relative humidity
range
unsigned int
Minimum value of relative humidity range,
cannot be set higher than maximum relative
humidity range minus 5%
0—(Max-50)
default: 0
200 = 20,0 % rH
20
Maximum relative humidity
range
unsigned int
Maximum value of relative humidity range,
cannot be set less than minimum relative
humidity range plus 5%
(Min+50)—1.000
default: 1.000
850 = 85 % rH
21
Minimum relative humidity
alert
unsigned int
Minimum relative humidity alarm value
Min. relative humidity range—Max.
relative humidity alarm
default: 0
200 = 20,0 % rH
22
Maximum relative humidity
alert
unsigned int
Maximum relative humidity alarm value
Min. relative humidity alarm —Max.
relative humidity range
default: 1.000
850 = 85 % rH
23—40
Reserved, return 0
41
Output 1 type (T)
unsigned int
Select analogue / modulating output 1 type
1—3
default: 1
1 = 0—10 VDC
2 = 0—20 mA
3 = PWM
42
Output 1 overwrite (T)
unsigned int
Enables the direct control over the temperature
output.
0—1
default: 0
0 = Disabled
1 = Enabled
43
Output 1 overwrite value (T)
unsigned int
Overwrite value for output 1. Active only if
Holding register 42 is set to 1.
0—1.000
default: 0
0 = 0 %
1.000 = 100 %
44
Internal voltage source
selection Output 1 (T)
unsigned int
Selection of internal voltage source for PWM
output 1.
0—1
default: 0
0 = 3,3 VDC
1 = 12 VDC
45—50
Reserved, return 0
51
Output 2 type (rH)
unsigned int
Select analogue / modulating output 2 type.
1—3
default: 1
1 = 0—10 VDC
2 = 0—20 mA
3 = PWM
52
Output 2 overwrite (rH)
unsigned int
Enables the direct control over the relative
humidity output.
0—1
default: 0
0 = Disabled
1 = Enabled
53
Output 2 overwrite value
(rH)
unsigned int
Overwrite value for output 2. Active only if
Holding register 52 is set to 1.
0—1.000
default: 0
0 = 0 %
1.000 = 100 %
54
Internal voltage source
selection Output 2 (rH)
unsigned int
Selection of internal voltage source for PWM
output 2.
0—1
default: 0
0 = 3,3 VDC
1 = 12 VDC
55—80
Reserved, return 0
If you want to find out more about Modbus over serial line, please visit:
http://www.modbus.org/docs/Modbus_over_serial_line_V1_02.pdf
VERIFICATION OF INSTALLATION INSTRUCTIONS
If your unit does not function as expected, please check the connections.
TRANSPORT AND STORAGE
Avoid shocks and extreme conditions; store in original packing.
WARRANTY AND RESTRICTIONS
Two years from the delivery date against defects in manufacturing. Any modifications
or alterations to the product after the date of publication relieve the manufacturer
of any responsibilities. The manufacturer bears no responsibility for any misprints or
mistakes in this data.
MAINTENANCE
In normal conditions this product is maintenance-free. If soiled, clean with a dry or
damp cloth. In case of heavy pollution, clean with a non-aggressive product. In these
circumstances the unit should be disconnected from the supply. Pay attention that
no fluids enter the unit. Only reconnect it to the supply when it is completely dry.
DSTHX-2
COMBINED T AND rH DUCT
TRANSMITTER
