Intermec Janus 2020 Reference Manual - Im_Cancel_Tx_Buffer

im_cancel_tx_buffer

3-12

im_cancel_tx_buffer

Purpose:

This function clears the contents of the transmit buffer, stops transmission in

progress, and resets the communications port.

Use this function with Polling Mode D to clear out the buffer. Other

protocols clear the buffer automatically.

Syntax:

With Intrmecd_IO, Intrmecp_IO;

Use Intrmecd_IO, Intrmecp_IO;

function im_cancel_tx_buffer (

port : IN IM_COM_PORT

) return System.Word;

IN Parameter:

The port_id parameter identifies the communications port as follows:

IM_COM1

COM1

IM_COM2

COM2, scanner port (2010 and 2050)

IM_COM4

COM4 (RF only)

Return Value:

This function returns one of the standard status codes listed in Appendix A,

“Status Codes.”

If there are no pending transmissions to receive, this function returns 4602H

(no client).

Notes:

You must install a protocol handler to use this function.

See also:

im_transmit_buffer_no_wait, im_transmit_buffer_noprot,

im_transmit_buffer

Example

See example for im_receive_buffer.