Asynchronous Subprograms (Asubs), Interrupt Routines; Function; General Functionality - Siemens SINUMERIK 840D sl Function Manual

K1: Mode group, channel, program operation, reset response

9.10 Asynchronous subprograms (ASUBs), interrupt routines

A stop event can be triggered by the following
● NC/PLC interface signals from the PLC
● Alarms with NOREADY response
● Stop key
● Read-in disable
● Single block
Note
Some NCK events are stopped for a short time, in order to perform a switching operation, and
restart immediately. These include, e.g. the ASUB that stops the contour briefly in order to
then start the ASUB immediately. These events are also allowed in the stop delay area,
however they are pushed back to its end and are thus considered "soft stop events".
Conditions
The following conditions apply while a stop delay area is being processed:
● A change in the feed is ignored while in the stop delay area. A feed disable is thus not
effective until the program area has been exited, and is stopped.
● None of the main run axes, such as command axes and positioning axes, which are
traversed with POSA, are stopped.
● Part program command G4 is permitted in the stop delay area.
Other part program commands that cause a stop in the meantime (e.g. WAITM) are not
permitted and trigger the alarm 16954.
● A stop delay area entered with an override of 0% will not be accepted!
9.10 Asynchronous subprograms (ASUBs), interrupt routines
9.10.1

Function

9.10.1.1

General functionality

Note
The terms "asynchronous subprogram (ASUB)" and "interrupt routine" are used
interchangeably in the description below to refer to the same functionality.
558
→ "Hard" stop event
→ "Hard" stop event
→ "Soft" stop event
→ "Soft" stop event
→ "Soft" stop event
Function Manual, 01/2015, 6FC5397-0BP40-5BA2
Basic Functions