Siemens SIMATIC S7-1500 Manual page 16

3 "Axis" Technology Object
3.3 Synchronous axis (TO_SynchronousAxis)
The following conductance interconnections can be used in the process.

A linear relationship of the two axes to each other, for example, via a defined
gear factor with relative or absolute position relationship between the slave and
the master axis.

A functional relationship of the two axis with each other, for example, via a
predefined cam disk that represents the mapping rule between the position of
the master axis and the positioning specification for the slave axis.
The slave axis has to be a synchronous axis in any of these relationships.
Figure 3-4 Definition of the conductance interconnections on the technology object
Possible conductance interconnections are:

Setpoint or actual value of a positioning or a synchronous axis

Actual value of an external encoder
The synchronous axis technology object can additionally be treated just as the
positioning axis technology object in the user program, i.e. the axis can also be
positioned to a predefined position without enabled synchronous operation from
the user program.
The following motion control instructions can be used together with the
synchronous axis:

All motion control instructions listed in the positioning axis.

"MC_GearIn"
Start of relative gearing between a master axis and a slave axis.

"MC_GearInPos" (only S7-1500T)
Start of absolute gearing between a master axis and a slave axis whilst
specifying a synchronous position. The synchronous position can be specified
in relation to the master or the slave axis.

"MC_PhasingAbsolute" (only S7-1500T)
Absolute shifting of the conductance reference in gearing mode during an
active synchronous operation.

"MC_PhasingRelative" (only S7-1500T)
Relative shifting of the conductance reference in gearing mode during an
active synchronous operation.

"MC_CamIn" (only S7-1500T)
Start of absolute cam disc synchronization between a master axis and a slave
axis whilst specifying a synchronous position in relation to the master axis.

"MC_SynchronizedMotionSimulation" (only S7-1500T)
Using this function sets an active synchronous operation in simulation. The
synchronous relationship between master and slave axis remains active for the
controller even if the slave axis is blocked via "MC_Power" or moved
individually with other PLCopen functions. A renewed synchronization of the
TOs of S7-1500(T)
Entry ID: 109743134, V1.0, 05/2017
16