Siemens S7-300 - 8.2 Discrepancy analysis at the fail-safe digital input modules

Machine and cam data
9.6 Physical units system
FM 352 electronic cam controller
74 Operating Instructions, 05/2011, A5E01071724-03
Default system of units
This manual always specifies limits using mm as the system of units To define the limits in
another system of units, convert the values as shown below:
To convert.... you calculate...
mm → inch Limit (inch) = limit (mm) × 0.1
1)
mm → degrees 10
-4
(4 decimal places)
10
-3
(3 decimal places)
10
-2
(2 decimal places)
Limit (degrees) = limit (mm) × 0.1
Limit (degrees) = limit (mm) × 1
Limit (degrees) = limit (mm) × 10
mm → pulses Limit (pulses) = limit (mm) × 1000
1)
The number of post-decimal places affects the number of pre-decimal places for the maximum
value. Four post-decimal places are used in the "inch" system of units, which means the maximum
entry your can make is 100,000.0000 inch. The "millimeter" system of units uses three post-
decimal places, which means the maximum entry you can make is 1,000,000.000 mm.