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FAQ within [ MELSEC-Q Series ]
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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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The following shows the initialization procedure. (1) Turn OFF the PLC ready flag. (2) Turn ON "[Cd.2] Parameter initialization request". [QD75M, QD75MH, LD... More Details >>
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Error1201 (HPR data incorrect) occurs when the backup data for absolute position restoration is lost.Execute the machine home position return after checking ... More Details >>
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Error 3012 occurs when the multiple CPU setting of PLC CPU (CPU No.1) does not match that of Motion CPU. (1) Check if the multiple CPU setting of the Multipl... More Details >>
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Set "[PA04] Function selection A-1" to "_1_ _h: Invalid".(Note): When using Q17nCPUN, set "Servo amplifier parameter 23 (Optional function 1)"... More Details >>
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No, the operation speed is not changed by changing the indirectly specified value.To change the speed during operation, use CHGV instruction. More Details >>
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Both OUT and SET instructions set the device by completion of condition.However, if not completion of condition, OUT instruction resets the device while SET ... More Details >>
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The following shows the devices for the battery errors. • [SM51] Battery low latch Turn ON when the voltage of battery reduces to less than 2.5[V]. Remains O... More Details >>
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Servo motor rotation direction
To reflect the change, set "[PA14] Rotation direction selection/traveldirection selection" and cycle the servo amplifier or execute a home position return af... More Details >>
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Check if 24 VDC power is supplied to "1A7" (pin No.) of the external input signal connector. More Details >>
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