Danfoss MCO 305, Design Manual, Page: 156 / 242

MCO 305 Design Guide
__ Software Reference __
156
MG.33.L4.02 – VLT
®
is a registered Danfoss trademark
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SYNCCMS
Summary Synchronization in CAM-Mode with slave marker correction.
Syntax SYNCCMS 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.
Description Like SYNCC, the command SYNCCMS brings about a synchronization in CAM-Mode,
but beyond that it also performs a marker correction of the slave. Here, the slave
position is corrected, not the curve position.
In contrast to SYNCCMM, no FIFO is created.
The marker can be the zero pulse of the encoder or an external 24 V signal.
NB!:
SYNCCMS 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 Par. 33-18 Slave Marker Distance
Syntax Example SETCURVE curve
SYNCCMS 0
// Synchronization in CAM-Mode with slave marker correction
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SYNCCSTART
Summary Start slave for synchronization in CAM-Mode
Syntax SYNCCSTART pnum
Parameter pnum = Start stop points number
pnum > 0 Engaging begins when the corresponding point A is reached, provided
the master moves in positive direction; the engage curve is finished at
point B. If point A and B are identical, the slave will be engaged with
the set maximum velocity – i.e. without curve – as soon as the master
has reached this point.
pnum = 0 The slave will be engaged immediately with the set maximum velocity.
It does not matter in what direction the master moves or whether it
moves at all.
pnum < 0 Again, the corresponding point pair is used, however, engaging begins
at point B and is finished at point A, i.e. in negative direction.
Description The command starts the movement of the slave. With pnum , the point pair is
selected that determines in which master position the synchronization begins and
where it should be finished.
When moving forward, the synchronization begins at point A and is finished up to
point B. When moving backward, it begins at point B and is finished up to point A.
Command Group CAM
Cross Index SETCURVE, Start-Stop-Points
Syntax Example SETCURVE curve
SYNCC 0
// CAM mode synchronization
SYNCCSTART 1 // Engage slave at point A from start stop point pair 1