Mitsubishi Electronics QD75P, QD75D user manual Code Machine Code, Refer to GD2

APPENDICES

MELSEC-Q

LINEAR INTERPOLATION

This automatic operation simultaneously operates two motors for the latitudinal (X) feed and longitudinal (Y) feed to move a target in a diagonal line for positioning. Three or four motors can also be operated simultaneously. The QD75 combines the operation of axis 1 through 4 for the linear interpolation. The same positioning data No. must be used for the setting. Refer to the term "INTERPOLATION OPERATION".

No.9
Longitudinal			4	5
feed
		3
				6
	2
No.8	No.1			7
Latitudinal feed

LOAD INERTIA RATIO

GDL2/GDM2

Refer to "GD2".

M CODE (Machine Code)

These are sub functions that interlock with the positioning operation to replace drills, tighten and loosen clamps, raise and lower welding electrodes, display various data, etc.

Either of two modes can be entered when the machine code turns ON: AFTER or WITH. The machine does not move to the next positioning when the machine code is ON. M codes are turned OFF by the PLC program. Code Nos. from 1 to 65535 assigned by the user and used (1: Clamp, 2: Loosen, etc.). Comments can be written after 50 of the M codes, and they can be monitored using a peripheral device or displayed on an external display. Refer to "AFTER MODE" and "WITH MODE".

MACHINE FEED VALUE

The OP address at the completion of the machine OPR is stored.

The current position of the machine coordinates determined by a machine having the OP address as a reference.

Even if the current value is changed, this value will not change.

LOW-INERTIA MOTOR

This is a motor used when frequent acceleration/deceleration is repeated. Low- inertia motors are longitudinally longer, to decrease the rotor diameter and cover the torque. This enables their inertia moment to be reduced up to 1/3 that of standard motors. The ideal load inertia ratio is 1 or less.

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 movement distance will become the master axis, and the speed will follow that axis. The slave axis speed will be ignored.

Appendix - 80