Reading And Writing Of System Variables - Siemens SINUMERIK 828D Function Manual

Detailed description
2.7 Actions in synchronized actions
Predefined M functions
Predefined M functions generally must not be output in synchronized actions.
Exceptions:
See also
Frequency (WHENEVER, FROM, WHEN, EVERY) (Page 13)
2.7.2

Reading and writing of system variables

The system variables of the NCK are listed in the "System Variables" Parameter Manual with
their respective properties. System variables that can be read or written in the action part of
synchronized actions are marked with an "X" in the corresponding line (Read or Write) of the
"SA" (synchronized action) column.
Note
System variables used in synchronized actions are implicitly read and written synchronous to
the main run.
References:
System Variables Parameter Manual
68
, , , , ,
M3 M4 M5 M40 M41 M42
, , , , and
M43 M44 M45 M70
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
M17
Synchronized actions