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5 Data table
5.1 Overview
There's quite an extensive set of parameters available in the RVT.
The individual parameters have been put together in groups to ease manipulation and
transfers between the different layers of the application.
The parameters won't be individually accessible to the application. Only groups of
parameters will be exchanged between the application and the lower layers.
This will allow the lower layer to be quite independent from the parameters contained
within the group.
The parameter groups will be split in two types:
-
Groups that are needed by the lower layers. They will have known and fixed group
IDs in all different applications.
-
Groups which are specific to an application. Their IDs will be known by the
applicative layer. The lower-layers won't know the internals of these parameter
groups.
5.2 Parameter Types
There are three basic types of parameter groups:
-
Configuration parameters are defining the behaviour of the system.
-
Measurement parameters are generated as data.
-
Info parameters are kind of internal information.
The parameters IDs allowed are set as follows:
Type
Configuration
Measurement
Info
The access type is given from the perspective of the local or distant user interface.
The "Configuration – Universal" parameters are considered as system parameters. As
such, they are only modifiable by users that have at least "Administrator" rights.
Sub-type
Universal
Access protected
Application Specific
Application Specific
Universal
Application Specific
Allowed IDs
Access type
Lower
R/W
0x0000
R/W
0x0100
R/W
0x0800
R
0x1000
R
0x2000
R
0x2100
Upper
0x0FF
0x07FF
0x0FFF
0x1FFF
0x20FF
0x2FFF
RVT communication ç Data table 27
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