Siemens SINUMERIK 840D Function Manual page 652

H1: Manual traversing
17.6 Manual traversing using a handwheel
Traversing distance
The traversing distance produced by rotating the handwheel is dependent on the following
factors:
● Number of handwheel pulses received at the interface
● Active increment (machine function INC1, INC10, INC100, ... INCvar)
● Pulse evaluation of the handwheel:
MD11320 $MN_HANDWH_IMP_PER_LATCH (handwheel pulses per detent position)
See Section "Parameter assignment (Page 658)".
● Distance of an increment:
MD31090 $MA_JOG_INCR_WEIGHT (evaluation of an increment for INC/handwheel)
See Section "Parameter assignment (Page 658)".
Handwheel connection
Up to six handwheels can be connected simultaneously. This means that up to six axes can be
traversed by handwheel simultaneously.
Representation of the handwheel number in the NC/PLC interface signals
Depending on the parameter assignment of MD11324, the representation of the handwheel
number in the NC/PLC interface signals is bit-coded (three handwheels can be represented)
or binary-coded (six handwheels can be represented). From the HMI, the handwheel number
is always transferred bit-coded, independent of the setting in MD11324.
See Chapter "Parameter assignment (Page 658)".
Handwheel assignment
The axis that is moved by turning the handwheel can be set via the via the PLC user interface
or via the user interface (HMI). The assignment is linked to the NC/PLC interface through the
PLC user program. In this way, several axes can be assigned to one handwheel
simultaneously.
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Axes and spindles
Function Manual, 06/2019, A5E47437747B AA