Siemens SINUMERIK 840D sl Programming Manual page 545

If the acknowledgement is negative an error is output.
Acknowledgement "S", "s" or to be omitted.
For some commands, the acknowledgement response is predefined, for others it is
programmable.
The acknowledgement response for program-coordination commands is always
synchronous.
If the acknowledgement mode is not specified, synchronous acknowledgement is the default
response.
19. Data access
Keyword / 1st
subroutine parameter
identifier
CHANDATA INT:
Channel
number
20. Messages
Keyword / 1st
subroutine parameter
identifier
MSG STRING:
STRING:
signal
22. Alarms
Keyword / 1st
subroutine parameter
identifier
SETAL INT: Alarm
number
(cycle
alarms)
23. Compensation
Keyword / 1st parameter-
subroutine 4th parameter
identifier
QECLRNON AXIS: Axis number
QECLRNOF
Fundamentals
Programming Manual, 09/2011, 6FC5398-1BP40-2BA0
Explanation
Set channel number for channel data access (only permitted in initialization block);
the subsequent accesses refer to the channel set with CHANDATA.
2nd Explanation
parameter
INT: Message modal: The message is active until the next message is queued.
Continuous-
If the 2nd parameter = 1 is programmed, e.g. MSG(Text, 1), the message will
path-mode
even be output as an executable block in continuous-path mode.
call
parameter
2nd Explanation
parameter
STRING: Set alarm: Sets alarm. A character string with up to four parameters can be
Character specified in addition to the alarm number.
string
The following predefined parameters are available:
%1 = channel number
%2 = block number, label
%3 = text index for cycle alarms
%4 = additional alarm parameters
Explanation
Quadrant error compensation learning ON: Quadrant error
compensation learning ON
Quadrant error compensation learning OFF: Quadrant error
compensation learning OFF
16.5 Predefined subroutine calls
Tables
545