Instrument Definition Request Message Fields
The Instrument Definition Request message is used by a user’s process to request transmission of this unit’s Symbol Mappings and Complex Instrument Definitions. All Symbol Mapping messages will be sent before Complex Instrument Definition Expanded and Exchange Designated Complex Instrument Definition messages. Refer to Spin Servers for more details regarding Sequence specification as well as buffering requirements.
| Field Name | Offset | Length | Type/(Value) | Description |
|---|---|---|---|---|
| Length | 0 | 1 | Binary | Length of this message including this field |
| Message Type | 1 | 1 | 0x84 | Instrument Definition Request message |
| Sequence | 2 | 4 | Binary | Must be 0. Only the current Symbol Mappings and Complex Instrument Definitions are available. |
| Total Length = 6 bytes | ||||