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MELSEC-Q
15 TROUBLESHOOTING
Related buffer memory
address
Axis 1 Axis 2 Axis 3 Axis 4
Set range
(Setting with sequence program)
Remedy
74
75
224
225
374
375
524
525
• Lower the OPR speed.
• Increase the dog signal input time.
(Refer to Section 8.2.3)
74
75
224
225
374
375
524
525
• Lower the OPR speed.
• Input external zero signals during the movement at a
creep speed.
(Refer to Section 8.2.5)
74
75
224
225
374
375
524
525
<OPR speed>
1 to 1000000 [pulse/s]
1 to 2000000000 [mm/min or others]
79 229 379 529
<OPR dwell time>
0 to 65535
• Lower the OPR speed.
• Increase the OPR dwell time.
(Refer to Section 8.2.4)
80
81
230
231
380
381
530
531
<Movement amount setting after
near-point dog ON>
0 to 2147483647
74
75
224
225
374
375
524
525
<OPR speed>
1 to 1000000 [pulse/s]
1 to 2000000000 [mm/min]
• Calculate the movement distance using a speed limit,
OPR speed, and deceleration time, and set the
movement amount after near-point dog ON so that
the distance becomes a deceleration distance or
longer.
• Lower the OPR speed.
• Adjust the near-point dog position so that the
movement amount after near-point dog ON becomes
longer. (Refer to Section 8.2.7, 8.2.8)
1500 1600 1700 1800
<Positioning start No.>
1 to 600
7000 to 7004
9001 to 9004
Execute the machine OPR (positioning No. 9001).
(Refer to Section 8.2)
1500 1600 1700 1800
<Positioning start No.>
1 to 600
7000 to 7004
9001 to 9004
Start the machine OPR (positioning start No. 9001)
again. (Refer to Section 8.2)
———— —
• Review the wiring. (Refer to Section 12.6)
• Review the sequence program.
———— —
• Review the wiring. (Refer to Section 12.6)
• Review the sequence program.
• Review the dedicated instruction parameters.
(Refer to Section 14.3)
1518
1519
1618
1619
1718
1719
1818
1819
<JOG speed>
1 to 1000000 [pulse/s]
1 to 2000000000 [mm/min or others]
Bring the JOG speed into the setting range.
(Refer to Section 11.2)
1517 1617 1717 1817
<Inching movement amount>
0 to 65535
Reduce the inching movement amount.
(Refer to Section 11.3)
Refer to Section 5.4
"List of block start data"
<Condition data No.>
1 to 10
Review the condition data No.
(Refer to Section 5.4
Da.14
)