Siemens S7-300 - Tracks and Track Result; Standard Tracks

Cam control basics
3.2 Tracks and track result
FM 352 electronic cam controller
18 Operating Instructions, 05/2011, A5E01071724-03
3.2 Tracks and track result
3.2.1 Standard tracks
Cam tracks
The 32 tracks can be used to control up to 32 different switching actions. You can evaluate
the tracks based on the checkback signals.
The first 13 tracks (track 0 to 12) are each assigned a digital output (Q0 to Q12) of FM 352.
Those tracks can be used for the direct control of a connected contactor relay, for example.
Track result
The system provides up to 128 cams which can be assigned to user-specific tracks.
Each track can be assigned several cams. The track result is a logic OR operation derived
from all cam values of this track.
Example of a track result
During parameter assignment, you define the following cams for track 3:
Cam Cam start Cam end
1 101 µm 106 µm
2 100 µm 104 µm
This leads to the following track result:
wP
wP
wP
V
&DP
&DP
&DP
7UDFNUHVXOWRIWUDFN
Figure 3-1 Calculating the track result
Track enable
In order to transfer the track results of tracks 0 to 12 to as track signals to the digital outputs
Q0 to Q12 of FM 352, enable the tracks used.