Siemens SINUMERIK 840DE SL - Page 384

Detailed Description
2.1 Velocities, traversing ranges, accuracies
Velocities, Setpoint/Actual-Value Systems, Closed-Loop Control (G2)
2-10 Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
⇒ The scaling factor for the linear velocities is to differ from the standard setting. In this case, bit
number 2 must be set in machine data:
MD10220 $MN_SCALING_USER_DEF_MASK.
⇒ MD10220 $MN_SCALING_USER_DEF_MASK = 'H4'; (bit no. 2 as hex value)
⇒ The scaling factor is calculated using the following formula:
0'6&$/,1*B)$&7256B86(5B'()>Q@
0'6&$/,1*B)$&7256B86(5B'()>Q@
0'6&$/,1*B)$&7256B86(5B'()>Q@

P

PP
V

PP
V
PP
V
PLQ




෎
,QSXWRXWSXWXQLWVHOHFWHG
,QWHUQDOXQLW
Index 2 defines the "Linear velocity" in the "Scaling factors of physical quantities" list.
Example 2:
In addition to the change in example 1, the machine data input/output of linear accelerations
is to be performed in ft/s
2
, instead of m/s
2
(initial state).
(The internal unit is mm/s
2
)
0'6&$/,1*B86(5B'()B0$6.
0'6&$/,1*B)$&7256B86(5B'()>Q@
0'6&$/,1*B)$&7256B86(5B'()>@

IW

PP
V
V
ය
ය
ය



PP
V

PP
V

+



ELWQRDQGELWQRIURPH[DPSOH
DVKH[YDOXH
Index 4 defines the "Linear acceleration" in the "Scaling factors of physical quantities" list.