Measuring The Deviation From Synchronism - Siemens SINUMERIK 840D Function Manual

Requirement
A coupling closed via the part/chuck must be in place in order to use this function.
Versions
There are two different options for determining the deviation from synchronism:
1. The deviation from synchronous operation is determined by the NC (see "Measuring the
deviation from synchronism (Page 559)").
2. The deviation value is already known and entered by the user directly (see "Entering the
deviation from synchronism directly (Page 562)").
In both cases, the deviation value is then incorporated into the setpoint value calculation for the
following spindle, as a correction value.
Availability
The "track the deviation from synchronism" function was developed for machine couplings
(CPFRS="machine"). This means that it is also available for the "synchronous spindle"
coupling type (CPSETTYPE="COUP").
Like the other higher-level movements, the availability of the function (e.g. speed difference)
depends on the option (see "Requirements (Page 492)").
14.5.13.2

Measuring the deviation from synchronism

The controller measures the difference between the setpoint positions and actual positions
when the following spindle is operating in synchronism. This results in a correction value, which
is saved in a system variable.
Axes and spindles
Function Manual, 06/2019, A5E47437747B AA
M3: Coupled axes
14.5 Generic coupling
559