niHSDIO Read Static PFI (U32) VI
- Updated2023-02-21
- 4 minute(s) read
Immediately reads all PFI channels configured for static acquisition. The least significant bit of read data corresponds to the lowest physical PFI channel number.
You can configure a channel for static acquisition using the niHSDIO Assign Static Channels VI. Channels not configured for static acquisition return a zero. Channels that do not exist on the hardware also return a zero.
Values obtained from static read operations are affected by the data interpretation parameter of the niHSDIO Configure Data Interpretation VI.
Related Topics
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instrument handle identifies your instrument session. instrument handle is obtained from the niHSDIO Init Acquisition Session VI, the niHSDIO Init Generation Session VI, or the niHSDIO Init Ext Cal VI. |
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error in (no error) describes error conditions that occur before this node runs. This input provides standard error in functionality.
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instrument handle out passes a reference to your instrument session to the next VI. instrument handle is obtained from the niHSDIO Init Acquisition Session VI or the niHSDIO Init Generation Session VI. |
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read data returns the bit value of data read from PFI channels configured for static acquisition. The least significant bit of read data corresponds to the lowest physical channel number. For example, bit 0 corresponds to PFI0, and bit 31 corresponds to PFI31, if that channel exists on the hardware. If read data returns a value of 0x000F, channels PFI0 to PFI3 are logic one and the remaining channels are logic zero or are not configured for static acquisition. If read data returns a value of 0xFFF0, channels PFI4 to PFI15 are logic one and the remaining channels are logic zero or are not configured for static acquisition. |
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error out contains error information. This output provides standard error out functionality.
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