read_io_channelT_read_io_channelReadIoChannelReadIoChannel (Operator)

Name

read_io_channelT_read_io_channelReadIoChannelReadIoChannel — Read a value from the specified I/O channels.

read_io_channelread_io_channelReadIoChannelReadIoChannelReadIoChannel reads input values from the specified transmission channels. The channels are passed in IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandle and can be opened and configured by open_io_channelopen_io_channelOpenIoChannelOpenIoChannelOpenIoChannel, the values are returned in ValueValueValueValuevalue. The parameter StatusStatusStatusStatusstatus returns for each read value in ValueValueValueValuevalue a quality message. The value 0 indicates that the corresponding value of ValueValueValueValuevalue could be read. Any other status value depends on the interface. Please refer to the interface-specific documentation in the directory 'doc/html/reference/io'"doc/html/reference/io""doc/html/reference/io""doc/html/reference/io""doc/html/reference/io" for further explanation.

IOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandleIOChannelHandle (input_control) io_channel(-array) → (handle)

Handles of the opened I/O channels.

ValueValueValueValuevalue (output_control) tuple-array → (integer / real / string)

Read value.

StatusStatusStatusStatusstatus (output_control) integer-array → (integer)

Status of read value.

If the parameters are valid, the operator read_io_channelread_io_channelReadIoChannelReadIoChannelReadIoChannel returns the value 2 (H_MSG_TRUE). If necessary an exception is raised. In this case, an extended error information may be set and can be queried with the operator get_extended_error_infoget_extended_error_infoGetExtendedErrorInfoGetExtendedErrorInfoGetExtendedErrorInfo.