Installation guide

Keyword Reference Guide

MN1270 02.2002 81

Example:

FEEDRATEMODE = 1 : REM feedrate mode

SPEED = 30 : REM slew speed 30 uu/s

MOVER = 50 : REM relative move of 50 units

GO : REM start the move

PAUSE OFFSET < 25 : REM wait until half way

FEEDRATE = 10 : REM Change slew speed to 10 uu/s

MOVER = 20 : GO : REM move 20 units

In this example, the move is started and ramps to a slew speed of 30 user units per second. When there

is less than 25 units left to travel, the slew speed is changed to 10 user units per second. This has no

effect on the move in progress however. When the next move of 20 units starts, a slew speed of 10 user

units per second is used.

Bit 1 controls the use of

FEEDRATEOVERRIDE. If bit 1 is set, then the slew speed is modified by the

percentage set with the

FEEDRATEOVERRIDE keyword. This is regardless of bit 0, i.e. speed or feedrate

mode. If bit 1 is not set, then the

FEEDRATEOVERRIDE keyword is ignored and the move will execute

at the desired slew speed.

Example:

FEEDRATEMODE = 2 : REM override enabled. Speed mode

SPEED = 20 : REM slew speed of 20 uu/s

FEEDRATEOVERRIDE = 50 : REM 50% override

MOVEA = 20 : GO : REM Absolute move to position 20

PAUSE OFFSET < 20 : REM Wait until 20 units left to travel

FEEDRATEMODE = 0 : REM override disabled. Speed mode

In this example, a move to position 20 is started. The slew speed of this move is 10 since the override

is set to 50%. When there is less than 20 units left to travel,

FEEDRATEOVERRIDE is disabled so the

axis will accelerate up to its full slew speed of 20 user units per second for the remainder of the move

length.