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FAQ within [ MELSEC-Q Series ]
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Error 108 (Start not possible) occurs when a start is requested while a stop signal is ON.Check the "[Md.26] Axis operation status".If "20: Servo amplifier ... 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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Alarm E7 (Controller forced stop warning) occurs when an forced stop is executed by the Positioning module or the Simple Motion module. The following shows h... 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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"M-code" is outputted to turn ON/OFF machine's solenoids or relays according to the start/end of the positioning operation. The following two modes are sele... More Details >>
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Alarm 2149 (Main circuit OFF warning) occurs when the servo system turns ON with no power supplied to the servo main circuit. Review the condition of servo O... More Details >>
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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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Major error 1201 occurs when the absolute position is erased.Execute the home position return after checking the batteries of the Motion CPU module and the s... More Details >>
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Error 1205 (SSCNET communication error) occurs when erroneous data is received from servo amplifier. [When the servo parameter "[PA14] Rotation direction se... 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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