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FAQ within [ MELSEC-Q Series ]
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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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Speed limit value change during operation
No, the speed limit cannot be changed during operation. More Details >>
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No, there is no impact on the command speed.However, the actual acceleration/deceleration time are affected by the change. More Details >>
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The rapid stop deceleration time of parameter block is applied.However, when the rapid stop deceleration time is set in the servo program, the value is enabl... 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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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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There are two ways to start a positioning operation: (1) Set the "[Cd.3] Positioning start No.", and turn ON the positioning start signal. (2) Use the dedica... 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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Change the direction with "[PA14] Rotation direction selection/travel direction selection". More Details >>
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