| Instrument Control Toolbox | |
Indicate if an asynchronous read or write operation is in progress
Description
TransferStatus can be idle, read, write, or read&write. If TransferStatus is idle, then no asynchronous read or write operations are in progress. If TransferStatus is read, then an asynchronous read operation is in progress. If TransferStatus is write, then an asynchronous write operation is in progress. If TransferStatus is read&write, then both an asynchronous read and an asynchronous write operation are in progress.
You can write data asynchronously using the fprintf or fwrite functions. You can read data asynchronously using the readasync function, or by configuring ReadAsyncMode to continuous (serial, TCP/IP, UDP, and VISA-serial objects only). For detailed information about asynchronous read and write operations, refer to Writing and Reading Data.
While readasync is executing for any instrument object, TransferStatus might indicate that data is being read even though data is not filling the input buffer. However, if ReadAsyncMode is continuous, TransferStatus indicates that data is being read only when data is actually filling the input buffer.
Characteristics
| Usage |
Any instrument object |
| Read only |
Always |
| Data type |
String |
Values
Functions
Properties
| | TransferDelay | TriggerFcn | |