Mitsubishi Electric MELSEC iQ-F Series User Manual page 48

Basic operation
The following describes the basic operation.
1.
After the drive contact is turned on, pulse output is started and the speed is increased from the bias speed.
2.
After the speed has reached the specified speed, the operation will be performed in the specified speed.
3.
If the command speed is changed during operation, the speed is increased/decreased to the specified speed and
operation continues.
4.
If the drive contact is turned off, the speed is decreased and pulse output is stopped.
Operand specification
■When FX5 operand is specified
(1) For (s), specify the command speed. Set to a value -200 Kpps to +200Kpps in pulse.
PLSV : -32768 to +32767 (User system unit)
•
DPLSV : -2147483648 to +2147483647 (User system unit)
•
(2) For (d1), specify an axis number (K1 to K4) for which pulses are output.
Specify an axis number whose positioning parameters are set in the high speed I/O parameters. Operation cannot be
performed if any other axis number is specified.
(3) For (d2), specify the bit devices of the instruction execution complete flag and abnormal end flag. (Page 62
Complete flag)
(d2) : Instruction execution complete flag
•
(d2)+1 : Instruction execution abnormal end flag
•
■When the FX3 compatible operand is specified
(1) For (s), specify the command speed. Set to a value -200 Kpps to +200Kpps in pulse.
PLSV : -32768 to +32767 (User system unit)
•
DPLSV : -2147483648 to +2147483647 (User system unit)
•
(2) For (d1), specify the pulse output number in the range of Y0 to Y3.
Specify an output device (Y) number (equivalent to the axes 1 to 4) set in the high speed I/O parameters. Operation
cannot be performed if any other axis number is specified.
(3) For (d2), specify the rotation direction signal output device number. (Page 40 Rotation Direction Setting)
When an output device (Y) is used, only the device that is specified with the positioning parameter or a general-
purpose output can be specified. However, if an output device (Y) to which PWM or CW/CCW axis is assigned is
specified, an error occurs without any operation.
For the PWM function, refer to User's manual (Application).
Command speed
• If the command speed is changed to 0 during operation, the operation does not end with errors but is decelerated to a stop.
As long as the drive contact is on, changing the command speed restarts pulse output.
• When 0 is set for the command speed at start of the instruction, the operation ends with an error.
Acceleration/deceleration Operation
• When acceleration time is set to 0, the speed is increased to the command speed immediately without acceleration
operation.
• When deceleration time is set to 0, no deceleration operation is performed and operation immediately stops when the drive
contact is turned off.
5 POSITIONING INSTRUCTION
104
5.7 Variable Speed Operation