Mitsubishi Electric MELSEC-Q Series User Manual page 379

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(2) When using an absolute position system

(a) This flag turns on in the following cases:

• When not executing a machine HPR once after system start.

• Machine HPR start

(Unless a machine HPR is completed normally, the HPR request flag does

not turn off.)

• Erase of an absolute position data in the Simple Motion module according

to causes, such as memory error (the error "HPR data incorrect" (error

code: 1201) occurrence)

• [Md.108] Servo status (high-order buffer memory address) b14 ON

[Md.108] Servo status: b14

• When the "Rotation direction selection/travel direction selection (PA14)" of

servo parameter is changed.

(b) This flag turns off by the completion of the machine HPR.

The address information stored in the Simple Motion module cannot be

guaranteed while the "HPR request flag" is ON.

The "HPR request flag" turns OFF and the "HPR complete flag" ([Md.31] Status:

b4) turns ON if the machine HPR is executed and is completed normally.

Wiring the proximity dog

When using the proximity dog signal, wire the signal contact that supports the

proximity dog of the equipment to be used as follows.

Refer to the instruction manual of the servo amplifier to be used for details on input

and wiring of the signal.

As for the 24VDC power supply, the direction of current can be switched.

Example) When the servo parameter "Function selection T-3 (PT29)" is set to the

initial value

Servo amplifier

Fig. 8.1 Wiring when using the proximity dog

When the "buffer memory of QD77GF" is selected, the wiring differs according to

the input module used.

For the wiring, refer to the manual of the input module to be used.

Buffer memory address (high-order)

Chapter 8 HPR Control

n: Axis No.-1