--- title: "Ir channel (_Ir class)" canonical: "https://docs.cuesystem.com/space/CVCHELP/520585217/Ir%20channel%20(_Ir%20class)" format: markdown --- > Macro (toc) --- # IrSend The function sends IR data to the IR channel. If a parameter repeatuntilstop is True, it sends the data repeatedly until a function StopIrSend is called.  #### Syntax  ```visualbasic Function IrSend(  irdata As _IrData,  Optional repeatuntilstop As Boolean := False) ``` #### Parameters  irdata  _IrData It is the data to be sent.  repeatuntilstop  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) Optional, defaults to False. If it is False, the data is sent only once. If it is True, the data is sent repeatedly until a function StopIrSend is called.  # IrSendFromByteString The function sends IR data from ByteString. If a parameter repeatuntilstop is True, it sends the data repeatedly until a function StopIrSend is called.  #### Syntax  ```visualbasic Function IrSendFromByteString(  irdata As ByteString,  Optional repeatuntilstop As Boolean := False) As Boolean ``` #### Parameters  irdata  [ByteString](/wiki/spaces/CVCHELP/pages/495058958/Data+types#ByteString). It is the ByteString with IR data to be sent. Command IrCaptureToByteString can be used to create ByteString with IR data.  repeatuntilstop  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) Optional, defaults to False. If it is False, the data is sent only once. If it is True, the data is sent repeatedly until a function StopIrSend is called.  # IrSendFromFile The function sends IR data from the file to the IR channel. If a parameter repeatuntilstop is True, it sends the data repeatedly until a function StopIrSend is called.  #### Syntax  ```visualbasic Function IrSendFromFile(  Filename As Text,  Optional repeatuntilstop As Boolean := False) As Boolean ``` #### Parameters  filename  [Text](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Text). It is the file name with IR data to be sent. Command IrCaptureToFile can be used to create a file with IR data.  repeatuntilstop  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) Optional, defaults to False. If it is False, the data is sent only once. If it is True, the data is sent repeatedly until a function StopIrSend is called.  #### Return value  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean)  It is True on success or False if an error occurs. The function [GetLastError](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#GetLastError) returns the error number. These errors can happen: [600](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#600), [601](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#601), [602](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#602), [603](/wiki/spaces/CVCHELP/pages/510525445/Command+errors#603).  # Send The function sends data to the IR channel. It returns True on success or False if data is not accessible.  #### Syntax  ```visualbasic Function Send(data As ByteString) As Boolean ``` #### Parameters  data  [ByteString](/wiki/spaces/CVCHELP/pages/495058958/Data+types#ByteString) It is the data to be sent.  #### Return value  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) It is True on success or False if data is not accessible. The function GetLastError returns the error number.  # SetCarrier The function modes the IR channel for sending with or without a carrier.  #### Syntax  ```visualbasic Function SetCarrier(enable As Boolean) ``` #### Parameters  enable  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) It enables (True) or disables (False) the carrier.  # SetSerialParameters The function sets the communication parameters of the IR channel.  #### Syntax  ```visualbasic Function SetSerialParameters(  mode As Byte,  bitspersecond As Long,  databits As Byte,  parity As Byte,  stopbits As Byte,  flowcontrol As Byte,  ParamArray)  As Boolean ``` #### Parameters  mode  [Byte](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Byte) It is the mode of the channel. Predefined constants for parameter mode are as follows:  | | | | | --- | --- | --- | | Name | Value | Description | | _SERIAL_MODE_RS232 | 0 | Channel is in RS232 mode. | bitspersecond  [Long](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Long) It is the baud rate from 300 to 115200.  databits  [Byte](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Byte) It is the number of data bits from 5 to 8.  parity  [Byte](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Byte) It is the type of parity. Predefined constants for parameter parity are as follows:  | | | | | --- | --- | --- | | Name | Value | Description | | _SERIAL_PARITY_NO | 0 | No parity. | | _SERIAL_PARITY_ODD | 1 | Odd parity. | | _SERIAL_PARITY_EVEN | 2 | Even parity. | stopbits  [Byte](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Byte) It is the number of stop bits. Predefined constants for parameter stopbits are as follows:  | | | | | --- | --- | --- | | Name | Value | Description | | _SERIAL_STOPBITS_ONE | 0 | One stop bit. | | _SERIAL_STOPBITS_ONEANDHALF | 1 | One and one half stop bits. | | _SERIAL_STOPBITS_TWO | 2 | Two stop bits. | flowcontrol  [Byte](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Byte) It is the type of control. Predefined constants for parameter flowcontrol are as follows:  | | | | | --- | --- | --- | | Name | Value | Description | | _SERIAL_FLOWCONTROL_NONE | 0 | No handshake. | | _SERIAL_FLOWCONTROL_DELAY | 4 | Specifies the delay time between bytes. It must be specified in the next parameter ParamArray. | ParamArray  [ParamArray](https://cue.atlassian.net/wiki/spaces/CVCHELP/pages/509149361) They are parameters of the flow. The number and types of these parameters depend on previous parameter flowcontrol if _SERIAL_FLOWCONTROL_DELAY is used.  _SERIAL_FLOWCONTROL_DELAY is used as the flowcontrol:  timedelay  [Time](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Time) It is the delay time between bytes.  #### Return value  [Boolean](/wiki/spaces/CVCHELP/pages/495058958/Data+types#Boolean) It is True on success or False if an error occurs. The function GetLastError returns the error number.  #### Examples  Channel IR1 is in RS232 mode, 9600 bits per second, 8 data bits, no parity, one stop bit, and no handshake.  ```visualbasic IR1.SetSerialParameters(  _SERIAL_MODE_RS232,  9600,  8,  _SERIAL_PARITY_NO,  _SERIAL_STOPBITS_ONE,  _SERIAL_FLOWCONTROL_NONE) ``` Channel IR1 is in RS232 mode, 9600 bits per second, 8 data bits, no parity, one stop bit, specifies the delay time between bytes. The time delay is 1 second.  ```visualbasic IR1.SetSerialParameters(  _SERIAL_MODE_RS232,  9600,  8,  _SERIAL_PARITY_NO,  _SERIAL_STOPBITS_ONE,  _SERIAL_FLOWCONTROL_DELAY,  :1) ``` # StopIrSend The function stops sending IR data to the IR channel started by the function IrSend.  #### Syntax  ``` Function StopIrSend() ```