
BASIC commands
PROGRAMMING MANUAL
132
R
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vi
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3.2.191 MOVE
/i
Description
The
MOTION_ERROR
parameter contains a bit pattern showing the axes
which have a motion error. For example. if axis 2 and 6 have the motion error
the
MOTION_ERROR
value would be 68 (4+64).
A motion error occurs when the
AXISSTATUS
state for one of the axes
matches the
ERRORMASK
setting. In this case the enable switch (
WDOG
)
will be turned off, and
MOTION_ERROR
contains a bit pattern showing all
axes which have the motion error. The
ERROR_AXIS
parameter will contain
the number of the first axis to have the error.
Due to technical limitations
MOTION_ERROR
can return an invalid bit
pattern when multiple axes have a motion error. To obtain the correct
value use the
INTEGER_READ
command to get the bit pattern in 2
parts.
A motion error can be cleared executing a
DATUM(0)
command or resetting
the controller with an EX command.
Arguments
N/A
Example
No example.
See also
AXIS
,
AXISSTATUS
,
DATUM
,
ERROR_AXIS
,
ERRORMASK
,
WDOG
,
INTEGER_READ
.
Type
Axis command
Syntax
MOVE(distance_1 [ , distance_2 [ , distance_3 [ , distance_4 [, ...]]]])
MO(distance_1 [ , distance_2 [ , distance_3 [ , distance_4 [, ...]]]])
Description
The
MOVE
command moves with one or more axes at the demand speed
and acceleration and deceleration to a position specified as increment from
the current position. In multi-axis moves the movement is interpolated and the
speed, acceleration and deceleration are taken from the base axis.
The specified distances are scaled using the unit conversion factor in the
UNITS
axis parameter. If, for example, an axis has 4,000 encoder edges/mm,
then the number of units for that axis would be set to 4000, and
MOVE
(12.5)
would move 12.5 mm. Note that the electronic gear ratio parameters of the
Servo Drive can be used to adjust the number of encoder pulses per linear
axis distance. For details see 5.1.3.
MOVE
works on the default basis axis group (set with
BASE
) unless
AXIS
is
used to specify a temporary base axis. Argument
distance_1
is applied to the
base axis,
distance_2
is applied to the next axis, etc. By changing the axis
between individual
MOVE
commands, uninterpolated, unsynchronised multi-
axis motion can be achieved. Incremental moves can be merged for profiled
continuous path movements by turning on the
MERGE
axis parameter.
Considering a 2-axis movement, the individual speeds are calculated using
the equations below. Given command
MOVE(
x
1
,
x
2
)
and the profiled speed
v
p
as calculated from the
SPEED
,
ACCEL
and
DECEL
parameters from the
base axis and the total multi-axes distance
L
=
SQR(
x
1
2
+
x
2
2
)
.
The individual speed
v
i
for axis
i
at any time of the movement is calculated as:
v
i
= (
x
i
*
v
p
) /
L
.
Arguments
The command can take up to 64 arguments.
•
distance_i
The distance to move for every axis in user units starting with the base
axis.
Example
A system works with a unit conversion factor of 1 and has a 1000 line
encoder. Note that a 1000 line encoder gives 4000 edges/turn.
MOVE(40000) ' move 10 turns on the motor.