6
Functions
Festo – GDCP-CMMP-M3-FW-EN – 1203NH
27
specified interval. Outside the interval and for relative positioning, the direction of movement is taken
from the positioning record table.
Observe that with an unlimited drive that always moves in the same direction, it is pos-
sible for the actual position to be overrun. There is no limitation of the range of values.
The actual position is incremented up to overflow.
Option
Function
Shortest path
(for absolute positioning within
the interval)
Both directions of movement are permitted. Positioning takes
place by the shortest path, optimised for direction. Example: The
positioning interval is defined from 0 R … 5 R. The current actual
position is 4.5 R. The new setpoint position is 0.5 R. => The motor
controller does not travel four revolutions in the negative direction
but instead one revolution in the positive direction as this is the
shortest path to reach its destination.
Direction of rotation from
positioning record
The direction of rotation is not universally defined, but can be indi-
vidually defined for each positioning record. The following settings
are possible in the positioning record:
positive
The direction of movement of the axis is always posit-
ive. (Absolute and relative positioning)
negative
The direction of movement of the axis is always negat-
ive. (Absolute and relative positioning)
auto
The direction of travel is determined automatically
from the current position, target position and addi-
tional options (absolute, relative, relative related to
last target, etc.).
Direction of rotation always
positive
(Absolute and relative
positioning)
The direction of movement of the axis is always positive.
Direction of rotation always
negative
(Absolute and relative
positioning)
The direction of movement of the axis is always negative.
Range limit positive/negative
(interval)
By specifying an interval, the actual value only runs through values
within the specified limits. The position range is not influenced by
specifying the interval (unlimited, software limit switch not active).
Tab. 6.6
Options modulo positioning
Содержание CMMP-AS-***-M3 Series
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