User Guide

9
Appendix
Shading Control
88
Siemens Desigo TRA User Guide A6V10415564_en_a_21
Building Technologies 2015-06-23
9.3.2 BACnet Priorities for Shading
The following table illustrates the priorities used in Desigo.
BACnet Shading Priorities
Priority
Description
Example
1 Emergency mode 1 ‒
2 Emergency mode 2 Blinds can be raised during a fire alarm to permit
evacuation through windows or access to emergency
services personnel.
3 Emergency mode 3 For service and cleaning purposes, the blinds are
commanded to a specific position, so that personnel can
undertake the required work without the risk of blinds
being lowered.
4 Protection mode 1 Collision protection prevents the blinds from being
lowered if, for example, a door or window is open.
5 Protection mode 2 Wind protection raises the blinds when the wind is too
strong.
6 Minimum on/off ‒
7 Manual Operating
mode 1
Overwrites all manual interventions and auto functions.
8 Manual Operating
mode 2
 Manual mode by system operator
 Scheduler
9 Automatic mode 1 ‒
10 Automatic mode 2 ‒
11 Automatic mode 3 Automatic shading position to prevent a room form
overheating.
12 Automatic mode 4 ‒
13 Manual Operating
mode 3
 Manual operating in room
 Manual operation by system operator
 Presence detector
 Scheduler
14 Automatic mode 5 ‒
15 Automatic mode 6 Auto by the program
16 Automatic mode 7 ‒
NOTE:
All commands executed locally in the room at priority 13 are rejected if a higher
BACnet priority, for example priority 8, is pending, this means that the command
is also not executed later.