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System Serial Number
The system number will depend on use of number-giving classification or not in the database. What is the different?
System numbering
In our data model we have suggested that separate the System running number and the System Component running number using a colon. Number for a supply air System can look like this when number-giving classification is not used:
Number | Type | Number explanation |
|---|---|---|
0303.109 | Item number | Item number that is given by where it is placed in the Item Group structure |
/ | Separator | |
001 | System Component running number | |
: | Separator | |
01 | System running number | |
0303.109/001:01 | Complete System Number |
The System serial number is '01'. Identifying that this is the first System connected to the System Component.
System Component and Component Serial Number
Unique number
Components represent occurrences of an Item and will automatic get a serial number after the Item Classification. The Item classification and the serial number is absolutely unique in the database.
Since the number/code is unique, we can use this as an address in the central processing System, flow balancing and documentation.
System and Item Classification:
The Item can have:
System classification
Item classification.
Both System and Item classification
In all cases the Classification must be set on the item so that it can generate unique codes for the occurrences.
Notice
When both an Item and a System Classification are assigned to an Item, the Item Classification will be assigned to the Item and System Classification will be assigned to the occurrence of the Item.
Classification determines if it is a System Component or a Component
Occurrences of Item with System Classification will be a System Component. Occurrences of Item without a System classifiation will be a Component
Example: Numbering
When we combine all these classifications, we have a human readable code that gives us a lot of information about a Component.
Location (A01) - Building A floor 01
System Component (M.002) - Mechanical unit number 002, Air handling unit
Number | Type | Number explanation |
|---|---|---|
A01 | Location code | Classification code for Building A Floor 01 |
M.002 | System Component | Air handling unit. Mechanical unit number 002 |
01 | System serial number | Supply air System. First system owned by System Component M.002 |
23-33 25 13 11 | Component | Customized Indoor Air Handling Units. Number from OmniClass 23 |
001 | Occurrence serial number | First Occurrence of the Component 23-33 25 13 11 |
A01+M.002:01 - 23-33 25 13 11/001 | Occurrence number | Complete Occurrence number |
Component number form Primary system
In dRofus we can connect multiple systems. For example, the Component "VAV-unit" can be member of:
Air distribution system
Electrical system (Circuit)
Signal system.
The Component can only inherit number from one of these systems. That's why you can set "primary system" for the Component in the connections in properties pane. You can change primary system for the component after it's created. By changing the primary system, you will also change the number/ID of the component.
Note that you also can set Primary System to an System Component, but this will not effect the number to the System Component