Mitsubishi Electronics QD75D Also called PG zero. Refer to Zero Signal, Rotated by the motor

APPENDICES

TURNTABLE XY TABLE

MELSEC-Q

A rotating table, which is turned using power.

The table is used divided from one 360° rotation into the required locations for work. The positioning control unit is "degree".

30°

Rotated by the motor

UNIT SETTING

This is the setting of the unit for the actual address to which positioning is required, or for the movement amount.

The following units can be set: mm, inch, degree and pulse. The initial value in the parameters is a pulse unit.

WARNING

A warning is output as a warning code in when an abnormality is detected that is not serious enough to require cancellation or stoppage of the positioning operation. Warnings are handled differently than errors.

This is a device that moves a table in the X (latitudinal) and Y (longitudinal) directions so that positioning can be carried out easily. There are also commercially available products.

Y table	Ball screw
X table
	X table
Base table	Y axis

X axis

Z PHASE

Also called "PG zero". Refer to "ZERO SIGNAL".

ZERO SIGNAL

This refers to PG0 of the pulse generator (encoder) (one detection per shaft rotation). It also called "Z phase". Refer to the term

"PULSE GENERATOR".

WINDOW

These are the selection menus that appear on the screen when the QD75 is started.

•Menu selection window

•Mode function selection window

•Sub-function selection window

•Execution/setting selection window

WITH MODE

This is the mode that outputs the M code before the start of the positioning. This mode turns ON at the positioning start, enabling voltage to be applied to the welding electrodes, display of positioning speeds, etc. Refer to the term "AFTER MODE".

Appendix - 91