1 PRODUCT OUTLINE

1.1Positioning control 1.1.1 Features of QD75

The features of the QD75 are shown below.

(1) Availability of one, two, and four axis modules

MELSEC-Q

(a)One, two and four axis modules are available for both the open collector system pulse output (QD75P1, QD75P2, and QD75P4) and differential driver system pulse output (QD75D1, QD75D2, and QD75D4), comprising six different models.

A model is determined by the drive unit type and number of axes. (Refer to Section 2.2.)

(b)For connecting any of the QD75 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 3.1.)

(2)Wide variety of positioning control functions

(a)A wide variety of positioning control functions essential to any positioning system are supported: positioning to an arbitrary position, fixed-feed control, equal-speed control, and so on. (Refer to Section 5.3 and 9.2.)

1)Up to 600 positioning data items, including such information as positioning addresses, control systems, and operation patterns, can be prepared for each axis.

Using the prepared positioning data, the positioning control is performed independently for each axis. (In addition, such controls as interpolation involving two to four axes and simultaneous startup of multiple axes are possible.)

2)Independent control of each axis can be achieved in linear control mode (executable simultaneously over four axes).

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 form of either the linear interpolation through the speed or position control of two to four axes or the circular interpolation involving two axes.

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)For each positioning data, the user can specify any of the following control systems: position control, speed control, speed-position switching control, position-speed switching control, and so on. (Refer to Section 5.3 and 9.2.)

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Mitsubishi Electronics QD75P Positioning control 1.1.1 Features of QD75, Availability of one, two, and four axis modules