Siemens sinumerik 840D sl Function Manual page 373

2.7.14 Control system response
POWER OFF/POWER ON
If the retraction logic is stored in motion synchronous actions, it is not yet active on POWER
ON. Static synchronous actions that are required to be active immediately after POWER ON
must be activated within an ASUB started by the PLC. If drive-independent stop or retract
has been triggered, the drive software requires a subsequent POWER OFF/POWER ON.
In SW 6 and higher, the "Event-controlled program calls" function may be used instead of
ASUB.
Mode change, NC Stop
For logic operations static synchronous actions can be used (keyword IDS). They are not
affected by a mode change or a NC STOP/RESET.
Positioning of a command axis/spindle is aborted with channel stop.
ESR is available in AUTO, JOG and MDA modes.
Reset
Static synchronous actions are retained after a RESET.
On RESET, the values programmed for POLF and activation by POLFMASK are not deleted.
Part program start
On start of the parts program, the values programmed for POLF and activation by
POLFMASK are deleted.
The reason for resetting the programmed values POLF/POLFMASK is to force the ESR user
(just as other users of the lift fast function) to explicitly program the matching retraction
position for each workpiece programmed in each part program, rather than trust that a
suitable retract position has been stored in a previous machining process.
Special functions: Axis Couplings and ESR (M3)
Function Manual, 11/2006, 6FC5397-2BP10-2BA0
Detailed description
2.7 Extended stop and retract (ESR)
153