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9.2.6 1-axis fixed-feed control
In "1-axis fixed-feed control" ("
to carry out fixed-feed control in a set axis direction.
In fixed-feed control, any remainder of below control accuracy is rounded down to
convert the movement amount designated in the positioning data into the command
value to servo amplifier.
Operation chart
In 1-axis fixed-feed control, the address (
stop position (start point address) is set to "0". Positioning is then carried out to a
position at the end of the movement amount set in "
".
movement amount
The movement direction is determined by the movement amount sign.
• Positive movement amount .............. Positioning control to forward direction
• Negative movement amount ............. Positioning control to reverse direction
0
Designated
Positioning
movement
amount
start
Reverse direction
Movement direction for
a negative movement amount
Restrictions
(1) The error "Continuous path control not possible" (error code: 516) will occur
and the operation cannot start if "continuous path control" is set in "
Operation pattern
control.)
(2) "Fixed-feed" cannot be set in "
when "continuous path control" has been set in "
immediately prior positioning data. (For example, if the operation pattern of
positioning data No. 1 is "continuous path control", fixed-feed control cannot
be set in positioning data No. 2.) The error "Continuous path control not
possible" (error code: 516) will occur and the machine will carry out a
deceleration stop if this type of setting is carried out.
Control method
Da.2
(Address increase direction)
(Address decrease direction)
0
0
". ("Continuous path control" cannot be set in fixed-feed
Control method
Da.2
9 - 49
Chapter 9 Major Positioning Control
" = fixed-feed 1), one motor is used
Current feed value
Md.20
Positioning address/
Da.6
" Md. 20 Current feed
value" is set to "0" at
the positioning start
0
0
Stop position
Movement direction for
a positive movement amount
" in the positioning data
Operation pattern
Da.1
) of the current
Forward direction
Da.1
" of the
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