ATTN or PA1 to abort SRBs

In TSO mode you can press ATTN or PA1 to interrupt OMEGAMON while it waits on an SRB completion.

Normally, SRB commands execute so quickly that pressing ATTN has no effect. But, if OMEGAMON hangs on an SRB and the 10 second timeout does not occur, you can purge the SRB prematurely.

If you purge the SRB prematurely, the following message displays:

 WARNING      SRB ABORTED BY ATTENTION (RC=12) 

While you can interrupt, best practice is to allow OMEGAMON to timeout after 10 seconds.