Hi all !
I have some questions about the [CDB] diagram (the classes) and I will probably comment this post in the future for questions about the interfaces ([IDB] or [CII])
I have studied the slides linked with the [CDB] from
ExempleCapellaRadioReveilOA_SA.pdf and the 3 [CDB] from the IFE and now I think that I need some help (such as document?) and others looks (about my work) to progress
The context : I wish to
modelize a fluidic system (with pump, pipes, valve, sensors,…) which is a part of a nuclear island
and the command-control of this system. Actually I have only modelized the links (FE, CE, PL) of the fluidic system and I just start to add the links between the command-control and my system. Also, I have made a model using the 4 views (particularly thanks to the previous post
Physical Arch : Node vs Behaviour, thank you all) and I’m actually wondering
how my [CDB] could be improved and I have some
questions about this kind of diagram. In fact, the ExchangeItem(EI), the class and the interfaces are now the concepts with which I’m not comfortable manipulating (mainly because of the rich Palette and my lack of knowledge in UML) but i would like to start to use the EI, allocating them to the CE (CE1 = water --> fluidic system, CE2 = electrical --> command-control) and later to the FE.
The [CDB] first version
I wish to use a [CDB] firstly in the view LA because here appears how the system will work and especially because this view has for aim to manage the complexity, so it let me to make
some test more easily which few EI, classes and properties.
I have created
- 1 class (and 1 EI) for the fluidic system which let me to characterize the water
- 2 classes (and 2 EI) for the control-command which let me to characterize the information sent to the actuator (mainly : valve and pump) and received from sensors (pressure/flow/concentration sensors)
I have a lot of questions about it such as : for a signal start/stop (“open/close” for a valve and “startup/trip” for a pump, I think) should i use something else than a Boolean Type ? What is the best way to modelize a threshold crossing …?
Question 1 : But I think it’s better if I “just” ask : do someone have any suggestion or remark … ? Does it looks a good way to modelize ?
General questions about the [CDB]
Question 2 : what are the
Collection and when should we use it ?
Question 3 : why some concept have in their name the word
Reference ? When I double click I can add “referenced value” and “referenced property” so I thought there was a link with the “property value pkg” but i couldn’t allocate, I probably missed something
Question 4 : i don’t know how to formulate it … my problem is about the correct meaning (so use) of all the concepts of the 2 “Pin Open” (from
Boolean Type to
Collection Value Reference)
Maybe could you provide me an overview of the utilization of these concepts or anything to help me ? Why are they separated in 2 parts (the 2 “Pin Open”) ? At the beginning I thought it was : the first part is for the type, the 2nd part for the sub-type but it doesn’t seem right … hence my “general questions” to try to get an high view of this diagram, my wish being to understand the whole palette to use it the more correctly as possible
Thank you for reading !