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8. TANDEM DRIVE
8.4.3 Incremental feed while using tandem drive
(1) Synchronous mode
When incremental feed operation is performed while in synchronous mode, master axis data and signals
are used. An example is shown below.
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
Speed (master axis)
Speed (slave axis)
Start operation (ST)
(master axis)
Incremental feed operation
mode (S) (master axis)
In incremental feed operation
mode (SO) (master axis)
During operation (OP)
(master axis)
During smoothing of stopping
(SMZ) (master axis)
Important data classifications related to incremental feed operation during synchronous mode are shown in
the following table. For other related data, refer to Section 10.6.
Type
Items for which only item associated
with master is valid
Items defined for each axis
Command signal/data Incremental feed operation mode (S)
Movement direction (DIR)
Start operation (ST)
Manual feed speed
Acceleration time constant
Deceleration time constant
Incremental feed movement amount
None
Status signal In incremental feed mode (SO)
During operation (OP)
During smoothing of stopping (SMZ)
In-position (INP)
Position switch (PSW)
The in-position signal (INP) is output for each axis separately; therefore, when the axes have come to a
stop and in-position signals (INP) are being used, check the in-position signal (INP) for both the master axis
and the slave axis.
For other types of movement, normal axis movement is followed. (Refer to Section 5.2)
(2) Non-synchronous micro-adjustment mode
Movement is the same as for normal axis movement. (Refer to Section 5.2)