Siemens S7-300 - Resolution

Machine and cam data
9.11 Resolution
FM 352 electronic cam controller
Operating Instructions, 05/2011, A5E01071724-03
91
9.11 Resolution
Definition
The resolution reflects the accuracy of cam processing. It also determines the maximum
possible traversing range.
The resolution (RES) is calculated as follows:
Incremental encoder Absolute encoder / initiator
Input values
 Distance per encoder
revolution
 Increments per encoder
revolution
 Pulse evaluation: quadruple
 1 increment = 4 pulses
 Distance per encoder
revolution
 Increments per encoder
revolution
 1 increment = 1 pulse
Calculation RES = (distance/encoder revolution) / (pulse/encoder revolution)
Note
The resolution of the physical unit pulses is always 1.
All position values are rounded to the integer multiple of the resolution. This allows you to
distinguish between the set and used values.
Range of values of the resolution
Convert the range of values for the resolution according to the defined physical units. The
resolution must be kept within this range when setting the "distance per encoder revolution"
and "increments per encoder revolution" values.
Range of values for the resolution derived from the physical units:
Physical units
system
Representation
in...
Range of values of the resolution
mm 10
-3
mm 0.1 * 10
-3
mm to 1000 x 10
-3
mm/pulse
inch 10
-4
inch 0.1 * 10
-4
inch to 1000 x 10
-4
inch/pulse
degrees 10
-4
degrees
10
-3
degrees
10
-2
degrees
0.1 * 10
-4
degrees to 1000 x 10
-4
degrees/pulse
0.1 * 10
-3
degrees to 1000 x 10
-3
degrees/pulse
0.1 * 10
-2
degrees to 1000 x 10
-2
degrees/pulse
Pulses 1 pulse 1