Mitsubishi Electric QD75P1N User Manual page 107

5 DATA USED FOR POSITIONING CONTROL
Monitor data
(Data that indicates the control state. Stored in the buffer memory, and monitors as necessary.)
System monitor data
( Md.1 to Md.19
Axis monitor data
( Md.20 to Md.48
*1: Md.50 to Md.52 are only for the QD75P N/QD75D N.
The only valid data assigned to basic parameters 2, detailed parameters 2,
positioning data, or block start data are the data read at the moment when a
positioning or JOG operation is started. Once the operation has started, any
modification to the data is ignored.
Exceptionally, however, modifications to the following are valid even when they are
made during a positioning operation: acceleration time 0 to 3, deceleration time 0
to 3, and external start command.
• Acceleration time 0 to 3 and deceleration time 0 to 3:
Positioning data are pre-read and pre-analyzed. Modifications to the
data four or more steps after the current step are valid.
• External command function selection: The value at the time of detection is valid.
Monitors the QD75 specifications and the operation history.
*1 )
, Md.50 to Md.52
Monitors the data related to the operating axis, such as the current position
and speed.
)
The data is monitored with the sequence program or peripheral device. In this
chapter, the method using the peripheral device will be explained.
Control using the control data is carried out with the sequence program.
" Cd.41 Deceleration start flag valid" is valid for only the value at the time when
the PLC READY signal [Y0] turns from OFF to ON.
: Md.1
5 - 3
MELSEC-Q
to Md.48 , Md.50 to Md.52 *1