VI_ATTR_ASRL_RI_STATE
Resource Classes
Serial INSTR
Attribute Information
| Access Privilege | Data Type | Range | Default |
|---|---|---|---|
|
Read/Write |
ViInt16 |
VI_STATE_ASSERTED (1) |
N/A |
Description
VI_ATTR_ASRL_RI_STATE represents the current state of the Ring Indicator (RI) input signal. The RI signal is often used by modems to indicate that the telephone line is ringing. This attribute is Read Only except when the VI_ATTR_ASRL_WIRE_MODE attribute is set to VI_ASRL_WIRE_232_DCE, or VI_ASRL_WIRE_232_AUTO with the hardware currently in the DCE state.
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