DCO
DCO stands for Data Controller Object. DCOs are related to control of data flow within VI files. They can be attached to DDOs in both Front Panel and Block Diagram.
Within VI files, DCOs are stored as an array of Clusters which is a part of Data Space.
DCO Cluster
Below are the Cluster fields which make up DCO within Data Space.
| Data Type | Field Name | Description |
|---|---|---|
| I16 | dcoIndex | |
| U16 | ipCon | |
| U8 | syncDisplay | |
| U8 | extraUsed | |
| U8 | flat | |
| I8 | conNum | |
| I32 | flagDSO | |
| I32 | flagTMI | |
| I32 | defaultDataTMI | |
| I32 | extraDataTMI | |
| I32 | dsSz | |
| U8 | ddoWriteCode | |
| U8 | ddoNeedsSubVIStartup | |
| U8 | isIndicator | |
| U8 | isScalar | |
| I32 | defaultDataOffset | |
| I32 | transferDataOffset | |
| I32 | extraDataOffset | |
| I32 | execDataPtrOffset | |
| I32 | eltDsSz | |
| U8 | copyReq | |
| U8 | local | |
| U8 | feo | |
| U8 | nDims | |
| U8 | copyProcIdx | |
| U8 | copyFromRtnIdx | |
| U8 | misclFlags | |
| U8 | unusedFillerByte | |
| I32 | subTypeDSO | |
| 4 x U8 | customCopyFromOffset | |
| 4 x U8 | customCopyToOffset | |
| 4 x U8 | customCopyOffset |