Siemens SINUMERIK 840DE sl Commissioning Manual page 553

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If, however, the specified force is reached during the cut-off check (i.e. travel to fixed stop is

successful), alarm 61255 "Error during cut-off: Tool break?" is issued.

The "Travel to fixed stop" function can also be used when gripping the spindle (see above). If

travel to fixed stop does not succeed when gripping, an alarm will of course still be issued.

Instead of alarms 20091 and 20094, the alarm 61254 "Error during travel to fixed stop" will be

MD37050 can also contain values not equal to 2, e.g. 10 = 2 + 8. Make sure that the value 2

is always contained logically so that the monitoring for travel to fixed stop can be hidden. If

MD37050 does not contain the value 2, the cut-off check is not active.

Machine manufacturer cycle

If you perform one of the following actions, you must adapt the machine manufacturer cycle

CUST_TECHCYC.SPF.

● Switch between spindle and C axis mode for the main spindle or counterspindle.

● Open, close, flush chuck (main spindle / counterspindle).

● Change default settings for the coupling of the main spindle and counterspindle.

Please refer to the following section for the procedure:

Setting-up ShopTurn cycles for turning (Page 533)

Technology cycles for turning

Thread-cutting (CYCLE99)

To correctly machine the thread, it is necessary to set the machine data MD52207

$MCS_AXIS_USAGE_ATTRIB[n] with bit 3, see Chapter: Setting up a counterspindle

Contour groovingCYCLE930, contour turning CYCLE950, stock removal at corner CYCLE951, contour

turning CYCLE952

SD55500 $SCS_TURN_FIN_FEED_PERCENT

SINUMERIK Operate (IM9)

Commissioning Manual, 12/2017, 6FC5397-1DP40-6BA1

100% finishing feedrate

Technologies and cycles

Enter the finishing feedrate for complete ma‐

chining, roughing and finishing. The percent‐

age of the value corresponds to that entered

under parameter F (feedrate).

21.5 Turning

Sinumerik 840d sl