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FAQ within [ MELSEC-Q Series ]
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Servo motor rotation direction
To reflect the change, set "[PA14] Rotation direction selection/travel direction selection" and cycle the servo amplifier or execute a home position return a... More Details >>
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The BUSY signal turns ON even when position control of movement amount "0" is executed.However, since the ON time is short, the ON status may not be detected... More Details >>
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PCPU READY complete flag (SM500)
The PCPU READY complete flag (SM500) turns ON when no error is detected in the fixed parameters, servo parameters, and limit switch output data, which are ch... More Details >>
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Yes. You can check the servo status through the following monitor data. • "[Md.108] Servo status 1" • "[Md.125] Servo status 3" (QD77MS, LD77MS, LD77MH) ... More Details >>
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Refer to "b2: Command in-position flag" of "[Md.31] Status". More Details >>
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No, execute "[Cd.5] Axis error reset" to cancel the error after eliminating the error cause. More Details >>
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Minor error 120 occurs in the following case:The zero pass signal (M2406+20n) is OFF when the re-movement to the home position is performed by proximity dog,... More Details >>
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Set "[Pr.3] Movement amount per rotation" to "36000000(360.00000degree)", and "[Pr.4] Unit magnification" to "1".The same result is obtained by setting "3600... More Details >>
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Speed limit value change during operation
No, the speed limit cannot be changed during operation. More Details >>
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Set "[Cd.6] Restart command" to "1". More Details >>
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