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Writes text to the serial port.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
SerialPort 3.0 Yes Yes Yes No No
MBS( "SerialPort.WriteHex"; PortReference; Text )   More


Parameter Description Example value
PortReference The reference number of the port. You get this number from SerialPort.Open when you open the port. $port
Text The text to send in hex encoding. "48656C6C6F"


Returns the number of bytes written or an error message.


Writes text to the serial port.
You pass the text hex encoded. For example for "Hello" you pass "48656C6C6F".


Write some text:

MBS( "SerialPort.WriteHex"; $port; "48656C6C6F" )

Send CRLF:

MBS( "SerialPort.WriteHex"; $port; "0C0A" )

Write escape P:

MBS("SerialPort.WriteHex"; $port ; "1B50" )

See also

Example Databases

Blog Entries

Created 18th August 2014, last changed 14th June 2017

SerialPort.WriteByte   -   ServerSocket.Check

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