Fagor CNC 8065 - Instructions for Independent Move: Synchronization

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Installation manual
CNC 8060
CNC 8065
4.
PLC PROGRAMMING.
(REF: 1402)
Action instructions.
4.4.9 Instructions for independent move: synchronization.
= FOLLOW ON
= TFOLLOW ON
= FOLLOW OFF
Activate the synchronized movement with real coordinates
(FOLLOW ON), with theoretical coordinates (TFOLLOW ON) or
cancel the synchronized movement (FOLLOW OFF).
The programming format for each of them is the following.
FOLLOW ON (master, slave, nratio, dratio, synctype)
TFOLLOW ON (master, slave, nratio, dratio, synctype)
FOLLOW OFF (slave)
The programming units are the standard PLC units. The coordinates the feedrates will be
given in ten-thousandths if they are in mm or degrees or in hundred-thousandths if they are
in inches.
Velocity synchronization.
Velocity offset.
It may be used to vary the speed of the slave axis independently from that of the master axis.
It is defined with the variable V.A.SYNCVELOFF.xn.
Gear ratio.
Ratio (Nslave/Nmaster) between the number of turns of the slave axis (Nslave) and the
number of turns of the master axis (Nmaster).
Fine adjustment of the gear ratio.
The gear ratio is determined when programming the instruction and its value remains
constant during the whole operation. However, and even if the synchronization is in progress,
this ratio may be modified by fine-adjusting it. The fine adjustment of the ratio is defined with
the variable GEARADJ.
Position (phase) synchronization.
Position offset.
It may be used to vary the position of the slave axis independently from that of the master
axis. It is defined with the variable V.A.SYNCPOSOFF.xn.
This function has a specific manual. This manual that you are reading now only offers some information
about this function. Refer to the specific documentation to obtain further information regarding the
requirements and operation of the independent axes.
Parameter Meaning
master Name of the master axis.
slave Name of the slave axis.
nratio Numerator of the gear ratio. Turns of the slave axis.
dratio Denominator of the gear ratio. Rotations of the master axis.
synctype Type of synchronism. It is programmed with parameters "POS" (position
synchronism) or "VEL" (velocity synchronism).
Example from the PLC program.
FOLLOW ON (A1, Z, 3, 1, VEL)
TFOLLOW ON (A1, Z, 3, 1, VEL)
FOLLOW OFF (Z)