Mitsubishi Electric MELSECQ Series User Manual page 205

13 TROUBLESHOOTING
Related buffer memory address
Axis 1 Axis 2 Axis 3 Axis 4 Axis 5 Axis 6 Axis 7 Axis 8
— —
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— —
— —
Pr. 1 Software stroke limit upper limit value
0 100 200
1 101 201
Pr. 2 Software stroke limit lower limit value
2 102 202
3 103 203
Da. 6 Positioning address/movement amount
— —
— —
— —
— —
5 152 252
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300 400 500 600
301 401 501 601
302 402 502 602
303 403 503 603
(Refer to Section 4.5)
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— — — — —
— — — — —
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352 452 552 652
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Setting range
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— —
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700
701
702
-2147483648 to 2147483647 (pulse)
703
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Cd. 3 Start method
0 : Positioning control
752
9000 : Machine OPR control
9001 : Fast OPR control
MELSEC-Q
Remedy
—
• Check that there is no influence from
noise.
• Check hardware for possibility of fault.
After switching power from OFF to
ON/resetting the programmable
controller CPU, turn ON the
Programmable controller READY signal
(Y0) again, make sure that the module
READY signal (X0) is ON, and then
make a start. (The module is faulty if the
module READY signal (X0) does not turn
ON.)
Check whether the axis stop signal (Y10
to Y17) is ON or OFF and turn OFF the
axis stop signal that is ON.
At start: Perform JOG operation (Refer to
Chapter 10) to change " Md. 1
Current feed value" to within the
software stroke limit range.
Current value changing:
Change the new current value to
within the software stroke limit
range (Refer to Section 9.2.4).
During operation:
Correct " Da. 6 Positioning
address/movement amount"
(Refer to Section 4.5).
Review the sequence program that turns
ON/OFF the Programmable controller
READY signal (Y0).
Perform JOG operation (Refer to
Chapter 10) to move the axis to the
position where the near-point dog turns
OFF, and then start machine OPR
control (Refer to Section 8.2.3, Section
8.2.7 and Section 8.2.8).
After turning OFF the zero signal, start
machine OPR control (Refer to Section
8.2.5 and Section 8.2.6).
Before starting fast OPR control, perform
machine OPR control (Refer to Section
8.2).
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