List Of Monitor Data; Axis Monitor Data - Mitsubishi Electric MELSECQ Series User Manual

4 DATA USED FOR POSITIONING CONTROL

4.6 List of monitor data

4.6.1 Axis monitor data

Item
Md. 1 Current
feed value
Md. 2 Movement
amount
after near-
point dog
ON
Md. 3 Current
speed
Md. 4 Axis
operation
status
Md. 5 Axis error
code
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Storage details
• The current position using the position when
OPR is completed as the base is stored.
Update timing: 1ms for QD70P4
2ms for QD70P8
• On completion of machine OPR control, the OP
address is stored.
• Under speed control of speed-position switching
control, whether the current feed value is
updated or not or cleared to zero can be selected
by parameter setting.
• The software stroke limit can be activated by
parameter setting.
• If the current value has been changed by the
current value change function, the new value is
stored.
[Range: -2147483648 to 2147483647 pulse]
• At a machine OPR control start, "0" is stored.
• After a machine OPR control start, the movement
amount from near-point dog ON up to machine
OPR control completion is stored.
(Movement amount: Indicates the movement
amount up to completion of machine OPR
control when near-point dog ON is defined as
"0".
• For near-point dog-free stopper type method, the
value is always "0".
[Range: 0 to 2147483647 pulse]
• The current speed is stored.
(The fraction is ignored. "0" may be displayed if
the speed is less than 1 pulse/s.)
Update timing: 1ms for QD70P4
2ms for QD70P8
[Range: 0 to 200000 pulse]
The operating status of the axis is stored.
-1 : Error
0 : Standby
2 : Stopped
3 : JOG Operation
4 : OPR
5 : Position • Control
(during speed control of speed-position
switching control)
6 : Speed • Position Speed
(during position control of speed-position
switching control)
7 : Deceleration (Axis Stop ON)
8 : Deceleration (JOG Start OFF)
9 : Fast OPR
At axis error occurrence, the error code
corresponding to the error definition is stored.
• If another error occurs during axis error
occurrence, the latest error code is ignored.
However, if a system-affecting error (error code:
800 to 840) has occurred, the old error code is
overwritten by the newest error code, which is
stored.
• The error codes 800 to 840 are stored into Md. 5
for all axes.
• When " Cd. 1 Axis error reset" (axis control data)
of the corresponding axis is turned ON, the axis
error code is cleared (to zero).
(Refer to "Section 13.2" for details of the error
codes.)
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Default Storage buffer memory address
value Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8
70 170 270 370
0
71 171 271 371
72 172 272 372
0
73 173 273 373
74 174 274 374
0
75 175 275 375
0 76 176 276 376
0 77 177 277 377
MELSEC-Q
470 570 670 770
471 571 671 771
472 572 672 772
473 573 673 773
474 574 674 774
475 575 675 775
476 576 676 776
477 577 677 777
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