Overview - Mitsubishi Electric MELSEC Q Series User Manual

1 OVERVIEW

1. OVERVIEW
This User's Manual describes the hardware specifications and handling methods of
the Q series high-speed, multi-axis Positioning Module QD74MH8/QD74MH16 (herein
after referred to as QD74MH).
1.1 Overview
QD74MH Positioning module is used in the multiple axes without complex controls.
(1) Availability of eight and sixteen axes modules
(2) Operation Cycle
(3) Easy positioning control functions
(a) Eight and sixteen axes positioning modules are available.
They can be selected according to the number of required control axes.
(Refer to Section 2.3.)
(b) For connecting any of the QD74MH modules to the base unit, a single slot
and 32 dedicated I/O channels are required.
Within the limit imposed by the maximum number of inputs and outputs
supported by the PLC CPU, up to 64 modules can be used.
(Refer to Section 2.2.)
(a) Operation cycle is 0.88[ms].
(a) Positioning control functions essential to any positioning system are
supported: positioning to an arbitrary position, incremental feed control,
continuous-locus control, and so on. (Refer to Chapter 8 or Section 9.2.)
1) Up to 32 positioning data items, including such information as "
Positioning address/movement amount", "
" Operation pattern", can be prepared for each axis.
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Using the prepared positioning data, the positioning control is
performed independently for each axis. (In addition, interpolation
control is possible.)
2) Independent control of each axis can be achieved in linear control
mode.
Such control can either be the independent positioning control using a
single positioning data or the continuous positioning control enabled by
the continuous processing of multiple positioning data.
3) Coordinated control over multiple axes can take the linear interpolation
through the position control.
Such control can either be the independent positioning control using a
single positioning data or the continuous positioning control enabled by
the continuous processing of multiple positioning data.
(b) Continuous positioning control using multiple positioning data can be
executed in accordance with the operation patterns the user assigned to the
positioning data. (Refer to Section 6.7 and 8.1.2.)
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