Mitsubishi Electric MELSEC iQ-F Series FX5 User Manual page 123

Positioning data to be set
To use the fixed-feed control, set the following positioning data.
: Always set
: Set as required
: Setting not required
Setting item
[Da.1] Operation pattern
[Da.2] Control method
[Da.3] Acceleration time No.
[Da.4] Deceleration time No.
[Da.5] Axis to be interpolated
[Da.6] Positioning address/movement amount
[Da.7] Arc address
[Da.8] Command speed
[Da.9] Dwell time
[Da.10] M code
[Da.27] M code ON signal output timing
[Da.28] ABS direction in degrees
[Da.29] Interpolation speed specification method
*1 To use the 2-axis fixed-feed control (interpolation), the axis to be used as the interpolation axis needs to be set.
*2 To use the 1-axis fixed-feed control, the setting is not required.
For details on the settings, refer to the following.
Page 410 Positioning Data
• When the movement amount is converted to the actual number of output pulses, a fraction after the decimal
point appears according to the movement amount per pulse. This fraction is usually retained in the
positioning module and will be reflected at the next positioning. For the fixed-feed control, since the
movement amount is maintained constant (= the number of output pulses is maintained constant), the
control is implemented after the fractional pulses are cleared to 0 at the start.
[Accumulated fraction pulses/Truncation]
Movement amount per pulse = If 2.5 m travel is implemented twice using 1.0 m
Conversion to output pulses: 2.5 [m]/1.0 = 2.5 pulses
Movement amount
Pulse output
INC1
Fixed-feed 1
• If the reference axis speed is used for the 2-axis fixed-feed control, set the major axis as the reference axis.
If the minor axis is set as the reference axis, the speed of the major axis cannot be suppressed with [Pr.8]
Speed limit value.
• For the combinations of the reference axis and interpolation axes, refer to the following.
Page 108 Interpolation control
Setting requirement of
reference axis




*1








*2

2.5 m
2 pulses
2 pulses
Clear to 0 during 0.5 pulse start held inside the positioning module,
and do not carry forward to 2nd positioning
Setting requirement of
interpolation axis













2.5 m
Carry forward 0.5 pulse start held inside the positioning
module to 2nd positioning
3 pulses (=2.5+0.5)
2 pulses
9 MAJOR POSITIONING CONTROL
9.2 Positioning Data Settings
9
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