Ptp Control - Omron CS1W-MC221 - 02-2008 Operation Manual

PTP Control

Operation name
Error counter reset
Servo-lock
Servo-unlock
Backlash correction
Automatic loading
Present position preset
Electronic gear
Acceleration/deceleration
curve
Unlimited feeding
Stop
6-2 PTP Control
Overview
Basic function
Forcibly resets the error counter to zero,
and stops axis operation.
Creates a position loop at the MC Unit.
Releases the position loop at the MC
Unit.
Compensates for backlash in the
mechanical system.
Downloads G-language programs,
position data, and system parameters to
the MC Unit from an external memory
device connected to a personal
computer running CX-Motion.
Presets the present position to any
specified value.
Sets the per/pulse ratio for an MPG or
sync encoder.
Specifies the acceleration and
deceleration method for how each axis
is started or stopped.
Specifies control for an axis to be fed
continuously, such as for a conveyer, for
example.
Describes how to stop the axis
operation.
Mode: Automatic; Method: G language (G00)
Positioning each axis independently from the other axes is called PTP control.
Each axis moves at the preset feed rates: at the acceleration for the preset
acceleration time, the maximum feed rate, and the deceleration for the preset
deceleration time. For details on using PTP control with the G language, refer
to 7-3-1 G00: POSITIONING.
For example, suppose a control program is executed for moving from the ori-
gin to the X-axis coordinate of 100 and Y-axis coordinate of 50. If the feed
rates, the acceleration times, and the deceleration times are the same for both
axes, X-axis and Y-axis movements will be as illustrated below.
The illustration shows movements when the high-speed feed
rate for the X axis is set to the same feed rate as the Y axis.
Both the X axis and Y axis move to a coordinate of 50 over the same duration
of time. At this point, the Y axis stops and the X axis moves to a coordinate of
100.
Jogging in the Manual Mode is also performed using PTP control using the
maximum jogging feed rate.
Mode Execution method
Automatic, Bit designation
manual
Manual Bit designation
Automatic, Bit designation
manual
Automatic, Command Area
manual designation, CX-Motion
Automatic, Command Area
manual designation, CX-Motion
Manual Command Area
designation
Manual System parameter setting
(by IOWR or CX-Motion)
Automatic, System parameter setting
manual (by CX-Motion only)
Automatic, System parameter setting
manual (by CX-Motion only)
Automatic, Bit designation, software
manual limit (system parameter),
external input (emergency
stop, limit input), etc.
Section 6-2
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