11 MANUAL CONTROL

11.2.4 Creating start programs for JOG operation

MELSEC-Q

A sequence program must be created to execute a JOG operation. Consider the "required control data setting", "start conditions" and "start time chart" when creating the program.

The following shows an example when a JOG operation is started for axis 1.

("

Cd.17

JOG speed" is set to "100.00mm/min" in the example shown.)

Required control data setting

The control data shown below must be set to execute a JOG operation. The setting is carried out with the sequence program.

 

 

 

 

Setting

 

 

 

 

 

Buffer memory address

 

 

Setting item

 

 

Setting details

Axis

Axis

Axis

Axis

 

 

value

 

 

 

 

 

 

 

 

 

 

 

1

2

3

4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Inching movement

 

 

 

 

 

 

 

 

 

 

 

Cd.16

0

Set “0”.

1517

1617

1717

1817

 

 

 

amount

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Set a value equal to or above the "

 

Bias

 

 

 

 

 

 

 

 

 

Pr.7

1518

1618

1718

1818

 

 

 

 

 

 

 

 

 

 

 

Cd.17

 

JOG speed

10000

speed at start" and equal to or below the

 

 

1519

1619

1719

1819

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

"

Pr.31

JOG speed limit value".

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Refer to Section 5.7 "List of control data" for details on the setting details.

Start conditions

The following conditions must be fulfilled when starting. The required conditions must also be assembled in the sequence program, and the sequence program must be configured so the operation will not start if the conditions are not fulfilled.

 

 

 

 

 

Device

 

 

Signal name

 

Signal state

 

 

 

 

 

 

 

Axis

Axis

 

Axis

Axis

 

 

 

 

1

2

 

3

4

 

 

 

 

 

 

 

 

 

PLC READY signal

ON

PLC CPU preparation completed

 

Y0

 

 

QD75 READY signal

ON

QD75 preparation completed

 

X0

 

 

Synchronization flag

ON

QD75 buffer memory

 

X1

 

Interface

The access is possible.

 

 

 

 

 

 

 

 

 

 

Axis stop signal

OFF

Axis stop signal is OFF

Y4

Y5

 

Y6

Y7

signal

 

 

 

 

 

 

 

 

Start complete signal

OFF

Start complete signal is OFF

X10

X11

 

X12

X13

 

 

 

BUSY signal

OFF

QD75 is not operating

XC

XD

 

XE

XF

 

Error detection signal

OFF

There is no error

X8

X9

 

XA

XB

 

M code ON signal

OFF

M code ON signal is OFF

X4

X5

 

X6

X7

 

 

 

 

 

 

 

 

 

 

Drive unit READY signal

ON

Drive unit preparation completed

 

 

 

 

 

 

 

 

 

 

 

External

Stop signal

OFF

Stop signal is OFF

 

 

 

signal

Upper limit (FLS)

ON

Within limit range

 

 

 

 

Lower limit (RLS)

ON

Within limit range

 

 

 

If the PLC CPU is set to the asynchronous mode in the synchronization setting, this must be inserted in the program for interlocking. If it is set to the synchronous mode, it must not be inserted in the program for interlocking because it is turned ON when the PLC CPU executes calculation.

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Mitsubishi Electronics QD75P, QD75D user manual Creating start programs for JOG operation, Required control data setting