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Functions
7100.006514_Bus description_PSD4xx_EC_F_EN
35
2022-12-12
4.8
Set the spindle pitch
Using SDO #2010 (numerator factor) and SDO #2011 (denominator factor), it is possible to
represent any desired spindle pitch using positioning scaling factors:
Number of increments per rotation = 400 ×
Denominator factor
Numenator factor
Both factors are set to a value of 400 by default, resulting in a resolution of 0.01 mm at a spindle
pitch of 4 mm.
The denominator factor serves as a simple means of setting the spindle pitch and resolution.
The numerator factor is primarily used for setting “unlevel” resolutions.
Examples:
Spindle pitch
Resolution
Numerator factor
Denominator factor
4 mm
1/100 mm
400
400
1 mm
1/100 mm
400
100
2 mm
1/10 mm
400
20
Note:
Numerator and denominator factors may take on values between 1 and 10,000.
4.9
Abort the run when the master fails
If the connection to the EtherCAT master is interrupted during a positioning run, the master cannot
abort a run that is already underway. The connection between master and slave is monitored
using a Sync Manager Watchdog so that an automatic run abort can be generated in such a case.
If there is no valid process data exchange within the specified time (default value = 100 ms), a
connection failure will be diagnosed. The drive will abort the run and not start a new positioning
run until the connection to the EtherCAT master has been re-established.