Direct Access Self-Defining Parameter
The presence of the Direct Access ID self-defining parameter indicates that the auxiliary device can be accessed directly by using the destination/origin structured field. When multiple auxiliary devices are supported that use a product-defined data stream, separate Product-Defined Data Stream query replies must be provided, each of which has a unique DOID.
| Offset | Length | Content | Meaning |
|---|---|---|---|
| 0 | 1 byte | X'04' | Parameter length |
| 1 | 1 byte | X'01' | Direct access ID |
| 2–3 | 2 bytes | DOID | Destination/origin ID |
- DOID
- The value in these bytes is used in the ID field of the destination/origin structured field to identify the auxiliary device as the destination or origin of the data that follows.