Specifications

App - 39
M
MACHINE FEED VALUE
The OP address at completion of machine OPR is
stored.
The current position in machine coordinates
determined by a machine having an OP address as
a reference is stored.
Even if the current value is changed, this value will
not change.
MANUAL PULSE GENERATOR
The handle of this device is manually rotated to
generate pulses. This device is used when
manually carrying out accurate positioning.
Made by Mitsubishi Electric Corp.
(model: MR-HDP01)
MASTER AXIS
When carrying out interpolation operations, this is
the side on which the positioning data is executed
in priority. For example, when positioning with the X
axis and Y axis, the side with the largest movemen
t
distance will become the master axis, and the
speed will follow that axis. The slave axis speed will
be ignored.
O
OVERRIDE FUNCTION
With this function, the speed during positioning
operations (current speed) can be varied between
1 and 300%.
The speed can also be changed by the same
variable rate for continuous positioning carried out
at different designated speeds.
P
PLC READY
This signal is output when the PLC CPU is in a
READY state.
Positioning can be started only in this state.
POSITION CONTROL
Control that is performed mainly over position and
dimension, such as in fixed-feed, positioning,
numerical control, etc. This is always controlled
with feed pulses.
POSITIONING
Accurately moving the machine from a point to a
determined point. The distance, direction, speed,
etc., for that movement are designated by users.
Positioning is used in operations such as cutting
sheets, drilling holes in plates, mounting parts on a
PCB, and welding. Positioning is also used with
robots.
POSITIONING DATA
Data for users to carry out positioning. The No. o
f
points to which positioning is carried out (the No. o
f
addresses) is designated by users. In the QD75,
these are 600 points. Writing (changing) data b
y
the program during positioning is also possible.
POSITIONING PARAMETER
Basic data for carrying out positioning control.
Types of data include control unit, movemen
t
amount per rotation, speed limit value, upper and
lower stroke limit values, acceleration/deceleration
time, positioning system, etc.
Parameters have an initial value, which can be
changed to match the control conditions.