Detailed Description   
2.2 Encoder monitoring 
  Axis Monitoring, Protection Zones (A3) 
2-18  Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0 
2.2.2  Zero mark monitoring 
Function 
The zero mark monitoring monitors the number of encoder impulses between two encoder 
zero marks of the active measuring system. In a properly functioning measuring system, the 
number of encoder impulses detected from encoder zero mark to encoder zero mark must 
remain the same. 
MD36310 $MA_ENC_ZERO_MONITORING (Zero mark monitoring)  
 
 
Note 
The zero mark monitoring is only active below the assigned encoder limit frequency for new 
synchronization: 
MD36302 $MA_ENC_FREQ_LIMIT_LOW