8 interpolation feed speed ratio setting (ifp), 1) overview – Yaskawa MP2000 Series: User's Manual for Motion Programming User Manual

Page 144

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8.1 Axis Setting Commands

8-37

8

Command Reference

8.1.8 Interpolation Feed Speed Ratio Setting (IFP)

(1) Overview

The Interpolation Feed Speed Ratio Setting command (IFP) sets the feed speed for the following axis move com-
mands as a percentage of the maximum feed speed for interpolation.

• Linear Interpolation command (MVS)
• Circular Interpolation command (MCW, MCC)
• Helical Interpolation command (MCW, MCC)
• SKP command (Linear interpolation with skip function) (SKP)

In this manual, the above axis move commands are referred to as Interpolation Related Commands, and the feed
speed of Interpolation Related Commands is referred to as the Interpolation Feed Speed. The interpolation feed
speed set by IFP command execution remains in effect until it is reset by the next IFP command.
The interpolation feed speed is not set when the program operation starts. It is necessary to set an interpolation
feed speed by executing the Interpolation Feed Speed Ratio Setting (IFP) or F designation before executing any
interpolation related commands.

Fig. 8.18 Interpolation Feed Speed Ratio Setting Command (IFP)

• Specify the maximum feed speed for interpolation by executing the Maximum Interpolation Feed Speed Setting com-

mand (FMX) before executing the IFP command. Executing the IFP command without first having specified the maxi-
mum feed speed will cause an alarm in the motion program.

• F designations can be used to specify the interpolation feed speed by writing a numerical value or register following to

a character F for interpolation related commands. Specify the interpolation feed speed in reference units/min.

• If an IFP command is executed after F designation, the interpolation feed speed specified by the F designation will be

cancelled. If an F designation is executed after IFP command execution, the interpolation feed speed specified by the
IFP command will be cancelled as well.

• Executing an interpolation related command without first having specified the interpolation feed speed will cause an

alarm in the motion program.

• The Interpolation Feed Speed Ratio Setting command (IFP) sets the feed speed for interpolation related commands

MVS, MCW, MCC, and SKP. Use the VEL command to set the feed speed for positioning related commands MOV and
EXM.

Motion Programs

Sequence Programs

Applicable

Not applicable

Speed (V)

[%]

Interpolation

feed speed

ratio

100% = Max. interpolation feed speed

Time (t)

100

INFO

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