Siemens S7-300 - Page 81

Machine and cam data
9.7 Machine data of the axis
FM 352 electronic cam controller
Operating Instructions, 05/2011, A5E01071724-03
81
Simulation velocity
Address Name Type Initial value Comment
84.0 SIM_SPD DINT L#0 Simulation velocity
The simulation velocity depends on the
resolution.
0 = standstill
5 ∗ 10
8
= highest setting supported by the
module
Within this range, the simulation velocity
depends on the resolution:
1000 x resolution ≤ simulation velocity
≤ 3 x 10
7
x resolution
This machine data determines the simulation velocity (see chapter "Influence of settings on the
switching characteristics of time-based cams (Page 103)"). The physical simulation velocity V
sim
may
deviate from the setting at V
sim, V
, and is calculated according to the following formula:






9 
6LP
6LP9
9
,QWHJHU
H[S5(6
H[S5(6
Meaning of this formula:
 V
sim:
Simulation velocity set by the FM 352. Unit:
µm
/
min
 V
sim, V:
Default simulation velocity set in machine data.
Unit:
µm
/
min
 RES: Resolution derived from encoder data. Unit:
µm
/
pulse
 Integer ( ): Of this expression, only the value before the decimal point is used for further
calculation. In all calculations, this expression must lie within the range from 2 to 65536.
The actual simulation velocity changes abruptly as a result of the relationships (see the formula).
Minimum edge interval
Address Name Type Start value Comment
4.0 EDGEDIST DINT L#0 Minimum edge interval
Range:
0 ... 1 000 000 000 µm
This machine data defines a range after detection of the start of a measurement for an edge
detection. The measurement is discarded if the end of the measurement lies within this range.
The start of the measurement is not reported unless the minimum edge interval has been traveled.