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FAQ within [ MELSEC-Q Series ]
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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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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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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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Speed limit value change during operation
No, the speed limit cannot be changed during operation. 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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Error 2035 (Command frequency error) occurs when the servo amplifier detects a command frequency error. (1) When the command is the permissible speed or high... More Details >>
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Check the following signals. • Start accept flag (M2001 to M2032) • Positioning start complete signal (M4000+20n (n: Axis No.-1)) 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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Acceleration/deceleration time change
No, the time cannot be changed during operation. (Note): The following is the modules that support the acceleration/deceleration change function. • Q17nDSCP... More Details >>
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