How this block appears in a Simulink model?
What can be configured?
Volatile Data Storage Setup block
Configuration Parameter |
Selectable Option/Value |
Description |
Storage name |
|
Specify the name of the variable. It should be unique. |
Define as volatile storage |
Check--Uncheck |
Declare the variable as a volatile or non-volatile |
Data type |
double--single--uint32--int32--uint16--int16--uint8--int8--char |
Select the data type |
Define as array |
Check--Uncheck |
Check to declare the variable as an array. Otherwise the array size will be 1 |
Array size |
|
Specify the size of the array. This will show once the Define as array is checked |
Initialize the storage |
Check--Uncheck |
Check this parameter to initialize the variable. |
Initial value |
|
Specify the value to initialize the variable •For char array: e.g 'Test string' •For other data type arrays: e.g {1,2,3,4,5} |
Volatile Data Storage Read block
Configuration Parameter |
Selectable Option/Value |
Description |
Storage name |
All available storage names in the current Simulink model |
Select the storage name |
Data type |
|
Display the data type of the selected storage name which configured in the Volatile Data Storage Setup block |
Data count |
|
Number of elements to be read from the variable if it is declared as an array |
Enable offset port |
Check--Uncheck |
This will enable the offset input port in the block. This offset port is used to specify the starting index of the array to be read. If the offset is specified, the data will be read from the offset to (offset + count) index. |
Sample time |
-1 by default |
Specify sample time |
INPUT Port
Port Name |
Port Type |
Date Type |
Description |
Offset |
Scalar |
Any |
This input port is used to specify the offset index if it is an array |
OUTPUT Port
Port Name |
Port Type |
Date Type |
Description |
Data |
Scalar/Vector |
Depends on the data type of the variable which is configured in the Volatile Data Storage Setup block |
This will output the stored data |
Volatile Data Storage Write block
Configuration Parameter |
Selectable Option/Value |
Description |
Storage name |
All available storage names in the current Simulink model |
Select the storage name |
Data type |
|
Display the data type of the selected storage name which configured in the Volatile Data Storage Setup block |
Data count |
|
Number of elements to be write to the variable if it is declared as an array |
Enable offset port |
Check--Uncheck |
This will enable the offset input port in the block. This offset port is used to specify the starting index of the array to be written. If the offset is specified, the data will be written from the offset to (offset + count) index. |
INPUT Ports
Port Name |
Port Type |
Date Type |
Description |
Offset |
Scalar |
Any |
This input port is used to specify the offset index if it is an array |
Data |
Scalar/Vector |
Depends on the data type of the variable which is configured in the Volatile Data Storage Setup block |
|
When to use this block?
This block can be used to set up, read from, store to a volatile or non-volatile variable in Waijung 2. For convenience, it is implemented on three blocks. Namely,
•Volatile Data Storage Setup
•Volatile Data Storage Read
•Volatile Data Storage Write
It is mandatory to have the Volatile Data Storage Setup block present in the model whenever the other blocks are used.
Demo
