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State of the CD, CTS, DSR, and RI pins
PinStatus is a structure array that contains the fields
RingIndicator. These fields
indicate the state of the Carrier Detect (CD), Clear to Send (CTS), Data Set Ready (DSR)
and Ring Indicator (RI) pins, respectively. For more information about these pins, see
직렬 포트 신호와 핀 할당.
PinStatus can be
off for any of
these fields. A value of
on indicates the associated pin is asserted.
A value of
off indicates the associated pin is unasserted. A pin
status event occurs when any of these pins changes its state. A pin status event
executes the call back function specified by
In normal usage, the Data Terminal Ready (DTR) and DSR pins work together, while the Request
to Send (RTS) and CTS pins work together. You can specify the state of the DTR pin with
DataTerminalReady property. You can specify the state of the RTS
pin with the
For an example that uses
PinStatus, see Example — Connecting Two Modems.
The associated pin is unasserted.
The associated pin is asserted.
The default value is device dependent.