Siemens SINUMERIK 840DE Programming Manual page 380

Special functions
9.1 Auxiliary function outputs
Description
Number of functions outputs per NC block
Up to 10 function outputs can be programmed in one NC block. Auxiliary functions can also
be output from the action component of synchronized actions. See /FBSY/
Grouping
The functions described can be grouped together. Group assignment is predefined for some
M commands. The acknowledgment behavior can be defined by the grouping.
Acknowledgements, high-speed function outputs, QU
Functions which have not been programmed as high-speed outputs can be defined as high-
speed outputs for individual outputs with the keyword QU. Program execution continues
without waiting for the acknowledgment of the miscellaneous function (the program waits for
the transport acknowledgment). This helps avoid unnecessary stoppages and interruptions
to traversing movements.
Machine manufacturer
The appropriate MD must be set for "high-speed function outputs", see /FB1/ Description of
Functions, H2, "Auxiliary Function Output"
Function outputs for travel commands
Time is needed to transfer information and wait for a corresponding response, and this has
an impact on the travel movements.
High-speed acknowledgment without block change delay
Block change behavior can be influenced by machine data. When the "without block change
delay" setting is selected, the system response with respect to high-speed auxiliary functions
is as follows:
Auxiliary function
output
before the movement
during the movement
after the movement
9-4
Procedure
The block transition between blocks with highspeed auxiliary
functions occurs without interruption and without a reduction
in velocity. The auxiliary function output takes place in the
first interpolation cycle of the block. The following block is
executed with no acknowledgment delay.
The block transition between blocks with highspeed auxiliary
functions occurs without interruption and without a reduction
in velocity. The auxiliary function output takes place during
the block. The following block is executed with no
acknowledgment delay.
The movement stops at the end of the block. The auxiliary
function output takes place at the end of the block. The
following block is executed with no acknowledgment delay.
Programming Manual, 10.2004 Edition, 6FC5 298-7AB00-0BP1
Fundamentals