SerialPort.GetXON
-----------------

Queries if XON/XOFF flow control is used.

| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
|---|---|---|---|---|---|---|
| [SerialPort](component_SerialPort.md) | [3.4](newinversion34.md) | ✅ Yes | ✅ Yes | ❌ No | ✅ Yes, on macOS and Windows | ❌ No |

MBS( "SerialPort.GetXON"; PortReference ) 

**MBS**( **"SerialPort.GetXON";** /\* Queries if XON/XOFF flow control is used. \*/  
**$PortReference**) /\* The reference number of the port. You get this number from [SerialPort.Open](SerialPortOpen.md) when you open the port.e.g. $port \*/ 

### Parameters

| Parameter | Description | Example |
|---|---|---|
| PortReference | The reference number of the port. You get this number from [SerialPort.Open](SerialPortOpen.md) when you open the port. | $port |

### Result

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

### Description

Queries if XON/XOFF flow control is used.  
### See also

- [SerialPort.GetCTS](SerialPortGetCTS.md)
- [SerialPort.GetDSR](SerialPortGetDSR.md)
- [SerialPort.GetRTS](SerialPortGetRTS.md)
- [SerialPort.GetTag](SerialPortGetTag.md)
- [SerialPort.Open](SerialPortOpen.md)
- [SerialPort.SetDTR](SerialPortSetDTR.md)
- [SerialPort.SetRTS](SerialPortSetRTS.md)
- [SerialPort.SetTag](SerialPortSetTag.md)
- [SerialPort.Setup](SerialPortSetup.md)
- [SerialPort.SetXON](SerialPortSetXON.md)

This function is free to use.

Created 18th August 2014 , last changed 18th August 2014

  
[SerialPort.GetTag](SerialPortGetTag.md) - [SerialPort.HasLine](SerialPortHasLine.md)

[HTML Version](SerialPortGetXON.shtml)