Tags - Siemens SIMATIC S7-1500 Function Manual

The following rules apply to the master value coupling:
● Positioning axes and synchronous axes can specify master values. A leading axis can
● The synchronous axis can be interconnected with different master values. All
● Only one master value is actively evaluated at any one time.
● Recursive interconnections are not possible. A leading axis cannot be interconnected as
Note
The master values and slave values are coupled without conversion into the relevant
configured user unit. If the leading axis is a linear axis (millimeters) and the following axis is
a rotary axis (degrees), for example, the unit is not converted during synchronous operation.
If the leading axis moves by 10 mm, the following axis moves by 10° with a gear ratio of 1:1.
3.19.4

Tags

The following technology object tags are relevant for synchronous operation:
Status indicators
<TO>.StatusSynchronizedMotion.ActualMaster
<TO>.StatusWord.X21 (Synchronizing)
<TO>.StatusWord.X22 (Synchronous)
<TO>.ErrorWord.X14 (SynchronousError)
S7-1500 Motion Control V13 Update 3
Function Manual, 07/2014, A5E03879256-AC
output the master value to several following axes.
interconnections required during operation must be set up during configuration of the
synchronous axis technology object.
following axis to its own master value.
The following example shows a recursive interconnection that is not permitted:
The following interconnections are configured in the TIA Portal:
Interconnection
A Axis 1 is a possible leading
B Axis 2 is possible leading axis
Use the Motion Control instruction "MC_GearIn" to enable interconnection A or
interconnection B. Interconnections A and B cannot be enabled at the same time
because it would be a recursive interconnection.
axis for axis 2
for axis 1
When a "MC_GearIn" job is started, the number of the technology data
block of the currently used leading axis is displayed.
"ActiveMaster" = 0 with disabled synchronous operation
When the synchronous axis synchronizes to a master value, the value
is set to TRUE.
When the synchronous axis is synchronized and moves synchronously
to the leading axis, the value is set to TRUE .
Error during synchronous operation
The leading axis specified at the Motion Control instruction
"MC_GearIn" was not configured as a possible leading axis.
3.19 Synchronous operation
Axis 1
Leading axis →
Following axis ←
Basics
Axis 2
Following axis
Leading axis
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