Mitsubishi MELSEC-A A1SD71-S2 User Manual page 45

3.
SPECIFICATIONS
MELSEC-A
(b) Positioning methods
The positioning method specified in positioning data becomes valid
only when a parameter positioning method was specified to use both
incremental and absolute mode positioning.
(If the parameter positioning method is not specified to use both
incremental and absolute mode positioning, the specification of the
positioning method in positioning data is ignored, and the positioning
method follows the setting in the parameter.)
POINT
I
While pattern 1 1 is continuous, positioning methods cannot be
changed.
When use of both incremental and absolute mode positioning is speci-
fied, positioning methods can be changed after pattern 00 or pattern 01.
(c) Positioning direction
For incremental mode positioning, the direction of travel relative to
the previous address must be specified. (0 specifies forward,
increasing address numbers and
1
specifies reverse, decreasing
address numbers.)
In absolute mode, the positioning direction is ignored.
Set the operation direction when starting positioning in the
speed/positioning control switching mode and the speed control
mode.
(During
JOG operations, setting to 0 specifies forward, increasing
address numbers and
1
specifies reverse, decreasing address
numbers.)
.I
(d)
M
code
Specifies an
"M"
code relevant to that position address. (range: 0 to
255)
The code should be set to 0 if it is not required.
During interpolation positioning,
M
codes are given individually for
the X and
Y
axes. (X-axis M code, buffer address
=
46.
Y-axis M
code, buffer address
=
346.)
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