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with the "off-on" suffix will automatically pinpoint the dragged component to the control
value described as switching between switch-off and switch-on graphics.
2.8
Fans
Figure 10 - sample graphic components from the Fans folder
The Fans folder contains dynamic images representing duct fans. Due to the features
described in section 2, the graphic components in the folder must be arranged in the correct
order in the PX file. This principle is the same as for the static images described in the
chapter 2.1.
2.8.1
Alarm components
Components with the suffix "alarm" in the name are dedicated to bind Boolean variables
signalling an alarm or failure. Graphics representing the alarm status of the device have been
added to these objects. The component has one control value (Value Binding), which affects
the Visibility property. The value of the true component of the Boolean type causes the
graphics to be shown, while false causes the graphics to be hidden. Components with the
suffix "alarm-anim" work in the same way as "alarm", the difference is that this component
does not have a background in the form of a ventilation duct and must be placed above the
layer with a fan and ventilation duct.
2.8.2
On/Off components
Components with the suffix "off-on" in the name are dedicated to binding Boolean variables
signalling operation or switching on. Graphics representing the status of switch-off and
switch-on of a given device have been added to these objects. The component has two
control values (Value Binding). The first one affects the switching between switching off