Mitsubishi Melsec-A Series User Manual page 30

3. SPECIFKATIOMS
/MELSEC
0
In absolute mode positioning, positions are reached with refe
rence to a zero point address.
(See
Fig.
3.7.)
1
I
tom
point A
B
To move from B
to A,
specify a d d r e s s
70 as
the
destination d d r e u
0
-
Address
70 Address 100
Fig.
3 . 7
Abduta
Method
0
To use both incremental and absolute modes in the Same axis
(e.g. X axis),
s e t
2.
In this
case,
the mode is controlled by the
individual piece of positioning data. (Refer to Section 3.4.3 (page
3-23)
.)
(16) M code ON/OFF timing
M codes are code numbers (1 to 255) assigned by the user to control
auxiliary functions a t defined points in the positioning cycle.
These
are used by the PC CPU to co-ordinate the operation of external
equipment and processes.
0
M code use/non-use must be specified as well as where in the
positioning sequence they are to be used,
When M code non-use is specified or
A6GPP
test
mode is in
operation, M code data in the buffer memory is cleared and the
"M code ON" signal is not output.
0
"M code ON" signal output is available in
two
timing modes,
WITH and AFTER.
0
WITH mode
The "M code ON" signal is
given a t approximately the Same time
as the positioning operation starts.
I
Start
Pattern
00
I
I
I
I
Operation
"M code ON"
I
I
"M code O F F "
Fig.
3 . 8
WITH Mode
Timing
3-1
5
IB INAI 66101.A