Siemens SINUMERIK 840D sl Programming Manual page 565

Example of the use of drive-independent response
Example configuration
• Axis A is to operate as generator drive,
• in the event of an error, axis X must retract by 10 mm at maximum speed, and
• axes Y and Z must stop after a 100 ms delay to give the retraction axis time to cancel the
Example execution
1. Activate options "Ext. Stop and retract" and "Mode-independent actions"
2. Function assignment:
3. Drive configuration:
4. Function enable (from parts program or synchronous actions) by setting the system
5. Accelerate generator drive to "momentum" speed (e.g. in spindle operation M03 S1000)
6. Formulate trigger condition as static synchronous action(s), e.g.:
• dependent on intervention of generator axis: IDS = 01 WHENEVER
• and/or dependent on alarms that trigger follow-up mode (bit13=2000H): IDS = 02
• and also dependent on EG synchronized operation (if, for example, Y is defined as the
Job planning
Programming Manual, 03/2006 Edition, 6FC5398-2BP10-1BA0
mechanical coupling.
(includes "Static synchronized actions IDS ...)".
$MA_ESR_REACTION[X] = 11,
$MA_ESR_REACTION[Y] = 12,
$MA_ESR_REACTION[Z] = 12,
$MA_ESR_REACTION[A] = 10;
MD 1639: RETRACT_SPEED[X] = 400000H in pos. direction (max. speed),
= FFC00000H in neg. direction,
MD 1638: RETRACT_TIME[X] = 10ms (retraction time),
MD 1637: GEN_STOP_DELAY[Y] = 100ms,
MD 1637: GEN_STOP_DELAY[Z] = 100ms,
MD 1635: GEN_AXIS_MIN_SPEED[A] = generator min. speed (rpm).
variables:
$AA_ESR_ENABLE[X] = 1,
$AA_ESR_ENABLE[Y] = 1,
$AA_ESR_ENABLE[Z] = 1,
$AA_ESR_ENABLE[A] = 1.
$AA_ESR_STAT[A]>0 DO $AN_ESR_TRIGGER = 1
WHENEVER ($AC_ALARM_STAT B_AND 'H2000'>0
DO $AN_ESR_TRIGGER = 1
EG following axis and if the max. permissible synchronized operation deviation is to be
100 μm):
IDS = 03 WHENEVER ABS($VA_E_SYNCDIFF[Y])>0.1
DO $AN_ESR_TRIGGER = 1
Additional functions
13.7 Extended stop and retract
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