Mitsubishi Electric MELSEC iQ-R RD75P4, User Manual

Page: 231 / 598

7 CONTROL SUB FUNCTIONS
7.3 Function to Compensate Control
229
7
Control precautions
When the relation of command speed V1 and V2 is one of the following, the same command output as the one for At constant
speed is executed even if the near pass output timing is set to At deceleration.
• When V1

V2
• When (the value that the distance

d is converted into the speed)

V2 < V1
The height of the shaded area in the right figure shows the value that the distance

d is converted into the speed.
Setting method
To use Output timing selection of near pass control, set the setting value to the following control data with the program. The
settings are validated at the rising edge (when turned off and on) of PLC READY signal [Y0].
For details on the settings, refer to the following.

Page 468 [Cd.43] Output timing selection of near pass control
Setting item Setting
value Setting detail Initial value at the
factory
[Cd.43] Output timing selection of
near pass control

Select the timing to output the difference (

d) between the actual and
the set positioning end addresses in continuous path control, in which
the difference (

d) is output during the execution of the next
positioning data.
0: At constant speed
1: At deceleration
0
V2 V2
V1
V1
Speed Speed
Less than 0.88ms 0.88ms
Time Time
Positioning data
No.1
Positioning data
No.1
Positioning data
No.2
Positioning data
No.2
V1 V1
V2 V2
Speed Speed
Less than 0.88ms 0.88ms
Time Time
Positioning data
No.1
Positioning data
No.1
Positioning data
No.2
Positioning data
No.2