iSMA-B-MINI/MIX BACnet User Manual
www.ismacontrolli.com
DMP261en | 1st Issue rev. 8 | 05/2022
page 49 of 114
Note:
Additional properties of the object are saved to maintain the backward
compatibility with the older firmware version. In the new firmware version, each of the
properties has a corresponding BACnet object.
PRESENT_VALUE Property
The property contains the voltage value, expressed in mV or percentage, of the analog
output PWM duty cycle. The output operation mode and property units are defined by
the AO_CONFIGURATION object.
COV INCREMENT Property
In the firmware versions above 4.0, MIX and MINI modules support COV (change of value),
which means that the module automatically sends the analog output value if it changes
more than the COV Increment property value (for IP modules this value can also be
changed in the
module’s
web page).
OUT OF SERVICE Property
For the analog output, the OUT OF SERVICE object property is set to true if the output is
overridden by the USB connection or in the
module’s
web page (only in IP version). The
OUT OF SERVICE is set to false if the Present Value property is set by the BACnet
message.
STATUS FLAG Property
The STATUS FLAG property contains information about the status of the object. This
property consists of 4 binary flags. Each flag is described in the table below.
Module Inputs
Results
AO Potentiometer
Priority Array
Present Value
Analog Output
Status Flag Property
Auto position
NULL
Default
Default
0000
ANALOG VALUE
ANALOG VALUE
ANALOG VALUE
Manual position
NULL
Manual Value
Manual Value
0010
ANALOG VALUE
Manual Value
Table 20. STATUS FLAG property changes
8.3.2 AO CONFIGURATION Object (Multistate Value: 17-22)
The object contains information about the mode of the analog output according to the
following table (changing configuration also has an impact on the analog output unit
property):
Object Value
Description
Unit Property
1 (default)
Voltage output 0–10 V
mV
