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3.
%
SPECIFICATIONS
.,
._
.
( 1 4)
Direction setting
Selects the'direction for which the present value increases. (Set 0 when
using forward pulse output. Set 1 when using reverse pulse output.)
Positioning and zero return follow this direction of rotation.
(I 5) Positioning mode
Specifies incremental, absolute, or incremental/absolute combination
In incremental mode positioning, positions are reached with reference
modes for
.positioning.
to the previous position. (See Fig. 3.6.)
Zero
point
A
B
When move from A to
6.
Flg. 3.6
Incremental
Method
In absolute mode positioning, positions are reached with reference to
a Zero point address. (See Fig. 3.7.)
Zero point
A
6
To move
from
6
to A,
specify address
70
as
Address
70
Address 100
the
destination
address
I
I
Fig.
3.7
Absolute Method
To use both incremental and absolute modes in the same axis (e.g.
X
axis), set 2.
In
this case, the mode is controlled by the individual piece
of positioning data. (Refer to Section 3.5.3.)
M
code ON/OFF timing
M codes are coge numbers (1 to 255) assigned by the user
to control
auxiliary functions
(for example, damp, drill rotation,
stop, and
tool
exchange commands, etc.
)
at defined points in the positioning cycle.
-
These are used by the
PC
CPU
to co-ordinate the operation of external
equipment and processes.
M
code usehon-use must be specified as well as where in the position-
ing sequence they are to be used.
When M code non-use is specified or peripheral device test mode is in
operation,
M
code data in the buffer memory is cleared and the "M code
ON" signal is not output.
When the M code used is specified, the output timing of the M code ON
signal must be specified.
"M
code ON" signal output is available in two timing modes, WITH and
AFTER.
(a) WtTH mode
The
"M
code ON" signal is given at approximately the same time as
the positioning operation starts.
3 - 17
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