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Queries whether DTR (data-terminal-ready) flow control is used.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
SerialPort 3.4 Yes Yes Yes No No

MBS( "SerialPort.GetDTR"; PortReference )


Parameter Description Example value
PortReference The reference number of the port. You get this number from SerialPort.Open when you open the port. $port


Returns current value (0 or 1) or error message.


Queries whether DTR (data-terminal-ready) flow control is used.

See also

SerialPort.GetDSR   -   SerialPort.GetDataBits

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