Zero Mark Synchronization - Siemens SINAMICS S120 Function Manual

Enabling the zero mark output of the TM41
For p4401.1 = 1, the zero mark from the leading encoder is also output from the TM41. For
p4401.1 = 0, TM41 outputs the zero pulse at the position at which the TM41 was located
when switching on.
6.23.4

Zero mark synchronization

After the drive has been powered up, a static offset is obtained as a result of the random
switch-on instant of the incremental encoder emulation.
This static offset can be corrected using this function. The positions of the zero marks output
at the TM41 are synchronized with the zero marks of the leading encoder. The following
conditions are defined for synchronization:
● The reference mark is located at the position at which both track signals A and B have
● The zero position is the positive edge of the A track belonging to the reference mark,
Figure 6-21 Example_TM41_zero mark synchronization
Drive functions
Function Manual, (FH1), 01/2013, 6SL3097-4AB00-0BP3
the "high" status.
which for a positive direction of rotation comes before the zero mark.
Basic functions
6.23 Terminal Module 41
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