Pictures can be exposed as Variables organised in the DeviceTypeImage folder. There may be multiple images of different resolutions. Each image is a separate Variable. The “DeviceTypeImage” Folder is formally defined in Table 21.
Table 21 – DeviceTypeImage definition
|
Attribute |
Value |
||||
|
BrowseName |
DeviceTypeImage |
||||
|
References |
NodeClass |
BrowseName |
TypeDefinition |
DataType |
ModellingRule |
|
HasTypeDefinition |
ObjectType |
FolderType (defined in OPC 10000-5.) |
|||
|
HasComponent |
Variable |
<ImageIdentifier> |
BaseDataVariableType |
Image |
MandatoryPlaceholder |
All images are transferred as a ByteString. The DataType of the Variable specifies the image format. OPC UA defines BMP, GIF, JPG and PNG (see OPC 10000-3).