Danfoss VLT5000 SyncPos Operating Instructions Manual page 149

■ ■ ■ ■ ■ SYNCC
The command SYNCC starts the CAM-Mode (cam
control). From this moment, the curve positions of
the master are counted depending on the actual
master positions and the defined starting behavior in
SYNCMSTART (62): Where and when counting is
started. With the parameter SYNCMSTART = 2000,
the curve positions of the master are only counted
after the next master marker.
Summary
Synchronization in CAM-Mode
Syntax
SYNCC num
Parameter
num = number of curves to be processed
0 = the drive remains in CAM-Mode until
another mode is started with commands such
as MOTOR STOP, CSTART, POSA etc.
NB!
SYNCC does not start the slave drive nor
does it interrupt on-going motions (e.g. CVEL),
only SYNCCSTART does.
NB!
The drive remains in CAM-Mode until num
curves have been processed successfully.
If the synchronization (after num curves) is being
closed normally, the start stop point pair 2 will be
used – if no SYNCCSTOP with a corresponding
point pair is defined – in order to stop the drive. It
will then come to a stop at the position slavepos
(see parameters).
Command Group
CAM
Cross Index
SYNCCSTART
Syntax Example
DIM curve [280] // see number of elements in
// the title bar of CAM-Editor
SETCURVE curve // Set curve
SYNCC
// Synchronization in
// CAM-Mode
148
Programmable SyncPos motion controller
■ ■ ■ ■ ■ SYNCCM M
Like SYNCC, the command SYNCCMM brings about
a synchronization in CAM-Mode, but beyond that it
also performs a marker correction (only if the master
moves forward).
In order to save the distance between sensor and
processing point, the parameter SYNCMPULSM is
used. It allows the correction of the marker position
without changing the curve. Also, larger sensor
distances than the actual curve length are possible.
In this case, a FIFO is used for the marker correction
(see example).
Summary
Synchronization in CAM-Mode with master marker
correction
Syntax
SYNCCMM num
Parameter
num = number of curves to be processed;
0 = the drive remains in CAM-Mode until
another mode is started with commands
such as MOTOR STOP, CSTART, POSA etc.
NB!
SYNCCMM does not start the slave drive nor
does it interrupt on-going motions (e.g. CVEL),
only SYNCCSTART does.
NB!
The drive remains in CAM-Mode until num
curves have been processed successfully.
If the synchronization (after num curves) is being
closed normally, the start stop point pair 2 will be
used – if no SYNCCSTOP with a corresponding
point pair is defined – in order to stop the drive. It
will then come to a stop at the position slavepos
(see parameters).
Marker signal
The marker can be the zero pulse from the enco-
der or an external 24 volt signal:
I5 = master
I6 = slave
Command Group
CAM
Cross Index
SYNCMPULSM
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