BASIC commands
PROGRAMMING MANUAL
80
Revi
si
on 3.0
3.2.113 FASTDEC
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3.2.114 FE
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3.2.115 FE_LATCH
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3.2.116 FE_LIMIT
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Type
Axis parameter
Syntax
FASTDEC
Description
Defaults to zero. If a non-zero
FASTDEC
is specified the axis will ramp to
zero at this deceleration rate when an axis limit switch or position is reached.
Arguments
N/A
Example
No example.
See also
N/A
Type
Axis parameter (read-only)
Syntax
FE
Description
The
FE
axis parameter contains the position error in user units. This is calcu-
lated by the demand position (
DPOS
axis parameter) minus the measured
position (
MPOS
axis parameter). The value of the Following Error can be
checked by using the axis parameters
FE_LIMIT
and
FE_RANGE
.
Arguments
N/A
Example
No example.
See also
AXIS
,
DPOS
,
FE_LIMIT
,
FE_RANGE
,
MPOS
,
UNITS
.
Type
Axis parameter (read-only)
Syntax
FE_LATCH
Description
Contains the initial
FE
value which caused the axis to put the controller into
MOTION_ERROR. This value is only set when the
FE
exceeds the
FE_LIMIT
and the
SERVO
parameter has been set to 0.
FE_LATCH
is reset to 0 when
the
SERVO
parameter of the axis is set back to 1.
Arguments
N/A
Example
No example.
See also
N/A
Type
Axis parameter
Syntax
FE_LIMIT
Description
The
FE_LIMIT
axis parameter contains the limit for the maximum allowed Fol-
lowing Error in user units. When exceeded, bit 8 of the
AXISSTATUS
parame-
ter of the axis will be set. If the
ERRORMASK
parameter has been properly
set, a motion error will be generated.
This limit is used to guard against fault conditions, such as mechanical lock-
up, loss of encoder feedback, etc.
Arguments
N/A
Example
No example.
See also
AXIS
,
AXISSTATUS
,
ERRORMASK
,
FE
,
FE_RANGE
,
UNITS
.
I52E-EN-03.book Seite 80 Freitag, 29. Juni 2007 11:55 11