Home Position Return

Positioning with Digital Inputs

 

 

Timing chart:

Auto/Manual mode (MD0)

ON

 

OFF

 

 

 

Select point table no. (DI0)

 

 

 

 

Start command

ON

 

Forward (ST1)

OFF

 

Start command

ON

 

Reverse (ST2)

OFF

 

 

 

 

 

 

 

 

PC04 “Home pos. return speed”

 

Servo motor speed setting

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

PC06 “Home offset”

 

 

 

 

 

 

 

 

 

PC05 “Creep speed”

 

Z-phase of encoder

ON

 

OFF

 

 

 

Home return complete (ZP)

ON

 

OFF

 

 

 

Fig. 4-5:

Home position return sequence in dogless Z-phase reference mode

 

 

 

 

No.

Code

Function

Description

PA05 ￿

*FTY

Feed length multi-

Needed here to scale the home position value to the physical coor-

 

 

plication factor

dinate system.

 

 

 

 

PC02 ￿

*ZTY

Home position re-

Selects the home position return mode:

 

 

turn mode

A: Dogless Z-phase reference mode

 

 

 

 

PC03 ￿

*ZDIR

Home position re-

0: Incrementing counting of encoder pulses

 

 

turn direction

1: Decrementing counting of encoder pulses

 

 

 

 

PC04

ZRF

Home position re-

Sets home position return speed until first detection of the Z-phase

 

 

turn speed

in [rpm].

 

 

 

 

PC05

CRF

Creep speed

Speed for precise movement to home position in [rpm].

 

 

 

 

PC06

ZST

Home position off-

Distance between the encoder zero point (Z-phase) and the physi-

 

 

set (shift)

cal home position in [µm].

 

 

 

 

PC07 ￿

*ZPS

Home position re-

The home position return stops when the Z-phase position is

 

 

turn position value

reached.You can enter a non-zero coordinate for this position [in

 

 

 

10STMµm] with this parameter.

Table 4-1:Parameter reference table

￿You must turn the power off and on again to activate this parameter.

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MITSUBISHI ELECTRIC