BASIC commands
PROGRAMMING MANUAL 80
Revision 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
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