3 SPECIFICATIONS AND FUNCTIONS

3.3.2 Details of input signals (QD75 PLC CPU)

MELSEC-Q

The ON/OFF timing and conditions of the input signals are shown below.

Device

Signal name

 

 

 

 

 

 

 

Details

No.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X0

QD75 READY

ON:

READY

• When the PLC READY signal [Y0] turns from OFF to ON, the parameter setting

 

 

OFF: Not READY/

 

range is checked. If no error is found, this signal turns ON.

 

 

 

Watch dog

• When the PLC READY signal [Y0] turns OFF, this signal turns OFF.

 

 

 

timer error

When watch dog timer error occurs, this signal turns OFF.

 

 

 

 

This signal is used for interlock in a sequence program, etc.

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

PLC READY signal [Y0] OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

QD75 READY signal [X0] OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X1

Synchronization

OFF: Module

After the PLC is turned ON or the CPU module is reset, this signal turns ON if the

 

flag

 

access

 

 

 

access from the CPU module to the QD75 is possible.

 

 

 

disabled

 

 

 

 

When "Asynchronous" is selected in the module synchronization setting of the CPU

 

 

ON:

Module

 

 

 

module, this signal can be used as interlock for the access from a sequence program

 

 

 

access

 

 

 

 

 

to the QD75.

 

 

 

enabled

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

X4

Axis 1 M code ON

OFF: M code is

In the WITH mode, this signal turns ON when the positioning data operation is

X5

Axis 2

 

not set

 

started. In the AFTER mode, this signal turns ON when the positioning data

X6

Axis 3

ON:

M code is

 

operation is completed.

X7

Axis 4

 

set

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

This signal turns OFF with the "

Cd.7

M code OFF request".

 

 

 

 

 

 

 

 

When M code is not designated (when "

 

M code" is "0"), this signal will

 

 

 

 

Da.10

 

 

 

 

 

remain OFF.

 

 

 

 

With using continuous path control for the positioning operation, the positioning will

 

 

 

 

 

continue even when this signal does not turn OFF. However, a warning will occur.

 

 

 

 

 

(Warning code: 503)

 

 

 

 

• When the PLC READY signal [Y0] turns OFF, the M code ON signal will also turn

 

 

 

 

 

OFF.

 

 

 

 

If operation is started while the M code is ON, an error will occur.

X8

Axis 1 Error

OFF: No error

This signal turns ON when an error listed in Section 15.1 occurs, and turns OFF

X9

Axis 2 detection

ON:

Error

 

when the error is reset on " Cd.5 Axis error rest".

XA

Axis 3

 

occurrence

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XB

Axis 4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

XC

Axis 1 BUSY 1

OFF: Not BUSY

This signal turns ON at the start of positioning, OPR or JOG operation. It turns OFF

XD

Axis 2

ON:

BUSY

 

when the "

 

Dwell time" has passed after positioning stops. (This signal

 

Da.9

XE

Axis 3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

remains ON during positioning.) This signal turns OFF when the positioning is

XF

Axis 4

 

 

 

 

 

 

stopped with step operation.

 

 

 

 

 

During manual pulse generator operation, this signal turns ON while the " Cd.21 Manual pulse generator enable flag" is ON.

This signal turns OFF at error completion or positioning stop.

X10

Axis 1 Start

OFF: Start

This signal turns ON when the positioning start signal turns ON and the QD75 starts

X11

Axis 2 complete

 

incomplete

 

the positioning process.

 

 

 

 

 

 

 

 

 

X12

Axis 3

 

ON:

Start

 

(The start complete signal also turns ON during OPR control.)

X13

Axis 4

 

 

complete

 

 

 

 

 

 

ON

 

 

 

 

 

 

Positioning start signal [Y10]

 

OFF

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ON

 

 

 

 

 

 

Start complete signal [X10]

 

 

 

 

 

 

 

 

 

 

 

 

 

 

OFF

 

 

 

 

 

 

 

 

 

 

 

X14

Axis 1 Positioning

OFF: Positioning

This signal turns ON for the time set in "

 

 

 

Positioning complete signal output

Pr.40

X15

Axis 2 complete

 

incomplete

 

 

 

 

 

 

 

 

 

 

 

 

 

 

time" from the instant when the positioning control for each positioning data No. is

X16

Axis 3

2

ON:

Positioning

 

 

completed.

 

 

 

 

 

 

 

 

 

X17

Axis 4

 

 

complete

 

 

 

 

 

 

 

 

 

 

 

 

 

(It does not turn ON when "

 

 

Positioning complete signal output time" is "0".)

 

 

 

 

 

 

Pr.40

If positioning (including OPR), JOG/Inching operation, or manual pulse generator operation is started while this signal is ON, the signal will turn OFF.

This signal will not turn ON when speed control or positioning is canceled midway.

3 - 15

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Mitsubishi Electronics QD75D, QD75P user manual Details of input signals QD75 PLC CPU