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4 DATA USED FOR POSITIONING CONTROL
Item
At axis warning occurrence, the warning code
corresponding to the warning definition is stored.
• The latest warning code is always stored. (When
a new axis warning occurs, the old warning code
Md. 6 Axis
is overwritten.)
warning
• When " Cd. 1 Axis error reset" (axis control data)
code
of the corresponding axis is turned ON, the axis
warning code is cleared (to zero).
(Refer to "Section 13.3" for details of the warning
codes.)
The ON/OFF states of the following flags are
stored.
The following items are stored.
• OPR request flag
(Refer to "Chapter 8" for details)
This flag turns ON at power-on or at machine
OPR control start, and turns OFF on
completion of machine OPR control.
• OPR complete flag
(Refer to "Chapter 8" for details)
This flag turns ON on normal completion of
machine OPR control, and turns OFF at an
OPR control, positioning control or JOG
operation start.
• 0 speed (Refer to "Section 11.3" for details)
Md. 7 Status
This flag turns on when JOG operation or
speed control of speed-position switching
control is started with the speed set to "0".
When a speed change is made, this flag turns
ON when a speed change request of new
speed value 0 is given, and turns OFF when a
speed change request of other than new
speed value 0 is given.
b15
b12
Not used
The ON/OFF states of the external I/O signals are
stored.
The following items are stored.
• Zero signal
• Near-point dog signal
• Speed-position switching signal/Retry switch
signal
• Deviation counter clear signal
Md. 8 External I/O
b15
b12
signal
Not used
• The positioning data No. currently being
executed is stored. (The stored value is held until
Md. 9 Executing
the next start is executed.)
positioning
• When JOG operation or machine OPR control is
data No.
started, 0 is stored.
• When fast OPR control is started, 1 is stored.
4 - 35
Storage details
b8
b4
b0
Storage item
OPR request flag
OPR complete flag
0 speed
b8
b4
b0
Storage item
Zero signal
Near-point dog
signal
Speed-position
switching signal
/ Retry switch signal
Deviation counter
clear signal
Default
value Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8
0
78
178
0001
79
179
H
Meaning
0 : OFF
1 : ON
0000
80
180
H
Meaning
0 : OFF
1 : ON
0
81
181
MELSEC-Q
Storage buffer memory address
278
378
478
578
279
379
479
579
280
380
480
580
281
381
481
581
678
778
679
779
680
780
681
781
4 - 35
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