iSMA-B-MINI/MIX BACnet User Manual
www.ismacontrolli.com
DMP261en | 1st Issue rev. 8 | 05/2022
page 44 of 114
Note:
Object’s
additional properties are saved to keep the backward compatibility with
the older firmware version. In the new firmware version, each property has a
corresponding BACnet object.
PRESENT_VALUE and UNITS Property
The property contains the actual value and unit of the universal input according to the
INPUT_TYPE property value. The units for the Present Value are defined by the
UI_CONFIGURATION object.
COV INCREMENT Property
In the firmware version above 4.0, MIX and MINI modules support COV (change of value),
which means that the module automatically sends the universal input value if it changes
more than the COV Increment property value (in IP modules this value can be also
changed from the module web page).
OUT OF SERVICE Property
If the Out Of Service property is false, the Present Value property represents the actual
value read from the input. Setting the Out Of Service property to true stops updating the
Present Value property, allowing to write a custom value to it. The custom value will then
override the value read from the physical input.
8.1.2 UI CONFIGURATION Object (Multistate Value: 1-8)
The object is used to set the type of the universal input. Changing the input type and the
analog input units property (voltage, resistance, or sensor type) also has an impact on the
UI object units.
Object
Description
Unit Property
1
Voltage measurement 0-10 V
mV
2
Resistance input
Ω
3 (default)
The temperature sensor 10K3A1 NTC B=3975K
°C
4
The temperature sensor 10K4A1 NTC B=3695K
°C
5
The temperature sensor 10K NTC B=3435K Carel
°C
6
The temperature sensor 20K6A1 NTC B=4262K
°C
7
The temperature sensor 2,2K3A1 NTC B=3975K
°C
8
The temperature sensor 3K3A1 NTC B=3975K
°C
WARNING!
If the Out Of Service property is false, the Present Value property cannot be
overridden, and the module will return an error message:
“Write
Access
Denied”.
