Incremental Travel (Inc) - Siemens SINUMERIK 808D Function Manual

Continuous mode in "JOG" mode can also be selected via the PLC interface (IS "Machine function: continuous"). The PLC
defines via the "INC inputs in mode group range active" interface signal (DB2600.DBX0001.0) the signal range within which
INC/continuous signals are delivered to the NCK:
DB2600.DBX0001.0 = 1
DB2600.DBX0001.0 = 0
Traversing keys +/-
The plus and minus traversing keys are selected to move the relevant axis in the appropriate direction.
Traverse key signals PLC to NCK IS:
● For geometry axes (traverse in WCS):
DB3200.DBX1000.7/.6, DB3200.DBX1004.7/.6, DB3200.DBX1008.7/.6
● For machine axes / spindle (traverse in MCS): DB80x.DBX004.7/.6
If both traversing keys of an axis are pressed simultaneously, there is no traversing movement, or, if an axis is in motion, it is
stopped.
Motion command +/-
As soon as a traverse request for an axis/spindle is active (e.g. after selection of a traverse key), the IS "Travel command+"
or "Travel command-" is sent to the PLC (depending on selected traverse direction):
● For geometry axes: DB3300.DBX1000.7/.6, DB3300.DBX1004.7/.6, DB3300.DBX1008.7/.6
● For machine axes / spindle: DB390x.DBX004.7 /.6
Continuous travel in "JOG" mode
The axis traverses for as long as the traverse key is held down if no axis limit is reached first. When the traversing key is
released, the axis is decelerated to standstill and the movement comes to an end.
8.3

Incremental travel (INC)

Programming increments
The path to be traversed by the axis is defined by so-called increments (also called "incremental dimensions"). The required
increment must be set by the machine user before the axis is traversed.
The setting is made on the machine control panel, for example. After the corresponding logic operation, the IS "Machine
function: INC1 to INCvar" associated with the required increment must be set by the PLC user program after it has been
correctly linked. The PLC defines via the "INC inputs in mode group range active" interface signal (DB2600.DBX0001.0) the
signal range within which INC signals are delivered to the NCK:
DB2600.DBX0001.0 = 1
DB2600.DBX0001.0 = 0
The active machine function IS "INC... " is signaled by the NCK to the PLC:
● For geometry axes: DB3300.DBX1001.0, DB3300.DBX1005.0, DB3300.DBX1009.0 to .5
● For machine axes / spindle: DB390x.DBX0005.0 to .5
Settable increments
The operator can set different increment sizes:
● Fixed increments whose increment sizes are common to all axes: INC1, INC10, INC100, INC1000 (only via IS:
INC10000).
Function Manual
01/2017
→ in the operating mode range: DB3000.DBB0002,
valid for all axes
→ in the geometry axis / axis range:
DB3200.DBB1001, DB3200.DBB1005,
DB3200.DBB1009, DB380x.DBB0005
→ in the operating mode range: DB3000.DBB0002,
valid for all axes
→ in the geometry axis / axis range:
DB3200.DBB1001, DB3200.DBB1005,
DB3200.DBB1009, DB380x.DBB0005
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