Siemens SINUMERIK 828D Function Manual page 108

Detailed description
2.7 Actions in synchronized actions
Generic coupling: Using the TRAIL, LEAD, EG or COUP coupling type.
If in the framework of the generic coupling, a behavior corresponding to one of the known
coupling types "Coupled motion", "Master value coupling", "Electronic gear" or "Synchronous
spindle" is required, the command
creating or defining the coupling module:
CPSETTYPE[FAx] = <coupling type>
<Coupling type>
CP
TRAIL
LEAD
EG
COUP
Supplementary conditions
Synchronism status of a following axis
The system variable $AA_SYNC[<axis>] can be used to read the synchronism status of a
following axis in the part program or synchronized action.
Axis replacement with cross-channel coupling
For axis replacement, the following and leading axes must be known to the calling channel.
Axis replacement of leading axes can be performed independently of the state of the
coupling. A defined or active coupling does not produce any other supplementary conditions.
Note
With the activation of the coupling, the following axis becomes the main run axis and is not
available for an axis replacement. The following axis is thus logged out of the channel. With
this type of coupling, an overlaid movement is therefore not possible.
See also Section "Axis replacement (GET, RELEASE, AXTOCHAN) (Page 92)"
Conflict prevention when changing from following axis to channel axis
In order to be able to traverse a following axis traversed via synchronized actions as a
channel axis again, you must ensure that the coupling is deactivated before the channel
requests the relevant axis.
The following example shows an error case:
Program code
...
N50 WHEN TRUE DO TRAILOF(Y, X)
N60 Y100
108
is also possible in synchronized actions when
CPSETTYPE
Meaning
Freely programmable
"Coupled motion" coupling type
"Master value coupling" coupling type
"Electronic gearbox" coupling type
"Synchronous spindle" coupling type
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
Synchronized actions