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3.
SPECIFICATIONS
MELSEC-A
3.4
Types and Functlons
of
Setting Data
Setting data is data that is necessary for an
AlSD71 to do positioning
control. Setting data is the general term for the following three kinds
of data:
Section 3.5 gives details about storing set data in the buffer memory.
t
Parameter
data
Zero return
data
Positioning data
Setting data is written using the following two methods:
1) By a peripheral device
.......
The Operating Manual and the AD71TU
or
AD71 TU
Operating
Manual
SWOGP-AD71
P
give
de-
tails.
2)
By a sequence program
.......
Section 6 gives details.
It
is necessary to set data for two (X and
Y)
axes.
Definition of a master axis and a slave axis during interpolation positioning
3.4.1
Parameters
Speed control mode
Positioning control mode
Master axis
Axis whose travel distance is long
Axis with a fast positioning speed
I
Slave axis
I
Axis with a slow positioning speed
I
Axis whose travel distance
is short
I
r
POINTS
I
(1
)
All-clear data
Before writing setting data, use a peripheral device
to do allclear
processing of the memory.
However, all clear of the following data cannot be done by using a
peripheral device:
Therefore, write "0" in the sequence program to clear the memory
in these cases.
1) Deceleration time for an emergency stop
2) Positioning mode
When using either the X or Y axis, write parameter and zero return
data to the axis not used.
Writing data must be a value in the setting range given in the
User's Manual. However, even if an initial value (default value)
is set by a parameter, there is no problem.
If zero return is done without writing data, an error occurs, and the
error detection signal (X1 B) goes ON.
(2) Data setting when using either the X or
Y
axis
Parameters are the basic data which enable the
AlSD71 to do positioning
control. The data in Table 3.5 is contained in parameters.
Initialization of parameters
If
all parameters are not set
or
an error outside the setting range is detected
by parameter checking, the
AlSD71 will be controlled using the initial
values shown in Table 3.5.
However, parameter area data remains as user-set values.
Parameters are checked when:
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