Delta AS Series Programming Manual page 1175

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4. Use S to select the zero return mode. The function code is set by the two high and low16-bit parameters. See the
3
following table for details.
Functions
Leaves the zero point in
the negative direction and
then stops
(Mode 0)
Leaves the zero point in
the positive direction and
then stops
(Mode 1)
Mode 0 Moves again after
returning to the zero point
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Mode 0 Searches Z phase
after returning to the zero
(Z phase input point is set
in HWCONFIG )
Mode 0 Outputs the clear
signal after returning to the
zero point.
(Output clear point is set in
HWCONFIG )
Leaves the zero point in
the positive direction and
then stops
6 - 8 9 6
High 16-
bit
0
0
Number
of pulses
for motion
Number
point
of Z
phases
Number
of pulses
for motion
or
number of
Z phases
0
Code
Low
16-bit
When the instruction is executed, the search for
the zero point is in the negative direction with the
target frequency. When the zero point is ON (the
zero point signal changes from OFF to ON), the
0
frequency is decreased to the JOG speed and
the motion in the negative direction continues,
and does not stop until the zero point signal
changes from ON to OFF.
When the instruction is executed, the search for
the zero point is in the negative direction with the
target frequency. When the zero point is ON (the
zero point signal changes from OFF to ON), the
1
frequency decreases to 0 immediately, and then
the motion is in the positive direction at the JOG
speed, and does not stop until the zero point
signal changes from ON to OFF.
Returning to the zero point is the same as that
for the low 16-bit code. After the zero point is
ON, the motion continues according to the
2 number of specified pulses. When the high 16-
bit code is a positive number, the search is in
the positive direction. A negative value means
that the search is in the negative direction.
Returning to the zero point is the same as that
for the low 16-bit code. After returning to the
zero point, the motion continues according to
the number of Z phases. When the high 16-bit
code is a positive number, the search is in the
positive direction. A negative value indicates
3
that the search is in the negative direction.
Suppose you specified that the rising-edge
trigger of X0.1 as the condition for the Z phase
input in HWCONFIG. The counting is
performed once whenever the rising-edge
trigger for X0.1 occurs.
Choosing a value between 4–7 means
selecting the functions codes 0–3 respectively,
4+0=4
and the specified output point sends an ON
4+1=5
signal that is about 20ms wide when the
4+2=6
function execution completes. The range of the
4+3=7
output point is Y0.12–Y0.15 and Y1.0–Y1.15.
(bit
For example, if you specify Y1.12 as the output
2=ON)
point in HWCONFIG, it indicates Y1.12 is for
the output of clear signals.
8+0=8
The operation for zero point return is the same
as that for code 1 (mode 1).
8+1=9
Explanation