1-Axis Fixed-Dimension Feed Control - Mitsubishi A1SD75M3 User Manual

9 MAIN POSITIONING CONTROL

9.2.4 1-axis fixed-dimension feed control

In "1-axis fixed-dimension feed control" (" Da.2 Control method" = fixed-dimension
feed 1), one motor is used to carry out fixed-dimension feed control in a set axis
direction.
In fixed-dimension feed control, any remainder of the movement amount designated in
the positioning data is rounded down if less than that required for control accuracy to
output the same amount of position commands.
Operation chart
In 1-axis fixed-dimension feed control, the address ( Md.29 Current feed value) of
the current 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 " Da.5
Positioning address/movement amount".
The movement direction is determined by the movement amount sign.
0
Positioning
Designated movement
amount
start
Reverse direction
Movement direction for
a negative movement amount
0 0
Stop position
9 - 29
MELSEC-A
" Md. 29 Current feed
value" is set to "0" at
the positioning start
0 0
Movement direction for
a positive movement amount
Forward direction