Mitsubishi A1SD75P1-S3, User Manual

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MELSEC-A
5 DATA USED FOR POSITIONING CONTROL
Storage item Storage details
Md.40 Status
The ON/OFF state of each flag is stored.
The following items are stored.
In speed control flag :
This signal is used to judge whether the system is in speed control or position
control. This turns ON during speed control. This signal is OFF when the power
is turned ON, during position control, during JOG operation and during manual
pulse generator operation. During speed/position changeover control, this
signal turns ON during speed control, and turns OFF when speed control to
position control changeover is executed with the speed/position changeover
signal.
Speed/position changeover latch flag :
This signal is used for the movement amount change enable interlock during
speed/position changeover control. This signal turns ON when position control
is changed to during speed/position changeover control. This signal turns OFF
when the next positioning data is executed, during JOG operation and during
manual pulse generator operation.
Command in-position flag :
This signal turns ON when the remaining distance is less than the command in-
position range (set with the detailed parameters). The position is checked every
56.8ms, and is not checked during speed control or controlling speed of
speed/position changeover control. This signal turns OFF during axis
movement in each operation.
Zero point return request flag :
This signal turns ON when the drive unit READY signal is OFF, when the PLC
READY signal [Y1D] is ON and during machine zero point return start. This
signal turns OFF when machine zero point return is completed.
Zero point return complete flag :
This signal turns ON when machine zero point return is completed normally. It
turns OFF when operation is started and when the drive unit READY signal is
OFF.
Axis warning detection :
This signal turns ON when an axis warning occurs, and turns OFF when axis
error reset is turned ON.
Speed change 0 flag :
This signal turns ON when a speed change is requested at the new speed
value 0, and turns OFF when the speed change is requested at a new speed
value other than 0.
Zero point absolute position overflow/underflow flag :
This turns ON if the zero point absolute position overflows or underflows when
the current value change function is executed.
This turns OFF when the current value change function is executed in the
reverse direction of the flowing direction.
Md.41 Target value
The target value ( Da.5 Positioning address/movement amount) during
positioning operation is stored.
•
During positioning start : The " Da.5 Positioning address/movement amount"
is stored.
•
Other times : "0" is stored.
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