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15 TROUBLESHOOTING
Related buffer memory
address
Axis 1 Axis 2 Axis 3 Axis 4
1522
1622
1722
1822
1523
1623
1723
1823
1516 1616 1716 1816
New speed value
1514
1614
1714
1814
1515
1615
1715
1815
Speed limit value
10
160
310
460
11
161
311
461
1504 1604 1704 1804
Refer to Section 5.3
"List of positioning data"
—
—
—
—
—
—
—
—
—
—
—
—
1546 1646 1746 1846
62
212
362
512
Refer to Section 5.3
"List of positioning data"
Set range
(Setting with sequence program)
<Manual pulse generator 1 pulse
input magnification>
1 to 100
<Speed change request>
1: Speed change is requested
0 to 1000000 [pulse/s]
0 to 2000000000 [mm/min or another]
QD75P :
1 to 200000 [pulse/s]
1 to 2000000000
[mm/min or another]
QD75D :
1 to 1000000 [pulse/s]
1 to 2000000000
[mm/min or another]
<M code OFF request>
1: M code ON signal is turned OFF
<Operation pattern>
00: Positioning complete
01: Continuous positioning control
11: Continuous path control
—
—
—
<Step start information>
1: Step is continued
2: Re-start is carried out
<External command function
selection>
0, 1, 2, 3
—
Set the manual pulse generator 1 pulse input
magnification to within the setting range.
Do not carry out the speed change during deceleration
with a stop command, during stoppage, or during
automatic deceleration with position control.
Set the new speed value to a range of 0 to "speed limit
value".
Normalize the ON and OFF timings of the "M code
OFF request". (Refer to Section 12.7.3)
Set the operation termination to the 50th point.
(Refer to Chapter 10)
Make 1 nest construction for FOR to NEXT.
(Refer to Section 10.3.8)
Do not turn ON the speed-position switching signal
during acceleration.
(Refer to Section 9.2.16)
Give a request at the position where there is an
enough remaining distance.
Do not set a "1" to the step start information when the
step is not in standby state. (Refer to Section 12.7.1)
Set the detailed parameter 2 "External command
function selection" to within the setting range.
Set a decelerating address or a movement amount to
the positioning data.
15 - 35
MELSEC-Q
Remedy
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Troubleshooting
