3 SPECIFICATIONS AND FUNCTIONS

MELSEC-Q

3.3Specifications of input/output signals with PLC CPU 3.3.1 List of input/output signals with PLC CPU

The QD75 uses 32 input points and 32 output points for exchanging data with the PLC CPU.

The input/output signals when the QD75 is mounted in slot No. 0 of the main base unit are shown below.

Device X refers to the signals input from the QD75 to the PLC CPU, and device Y refers to the signals output from the PLC CPU to the QD75.

Signal direction: QD75 PLC CPU

Signal direction: PLC CPU QD75

Device No.

 

 

Signal name

Device No.

 

Signal name

X0

 

 

QD75 READY

Y0

 

PLC READY

X1

 

Synchronization flag

Y1

 

 

X2

 

 

Use prohibited

Y2

 

Use prohibited

X3

 

 

Y3

 

 

 

 

 

 

 

X4

Axis 1

 

 

Y4

Axis 1

 

X5

Axis 2

 

M code ON

Y5

Axis 2

Axis stop

X6

Axis 3

 

Y6

Axis 3

 

 

 

X7

Axis 4

 

 

Y7

Axis 4

 

X8

Axis 1

 

 

Y8

Axis 1

Forward run JOG start

X9

Axis 2

 

Error detection

Y9

Axis 1

Reverse run JOG start

XA

Axis 3

 

YA

Axis 2

Forward run JOG start

 

 

XB

Axis 4

 

 

YB

Axis 2

Reverse run JOG start

XC

Axis 1

 

 

YC

Axis 3

Forward run JOG start

XD

Axis 2

 

BUSY

YD

Axis 3

Reverse run JOG start

XE

Axis 3

 

YE

Axis 4

Forward run JOG start

 

 

XF

Axis 4

 

 

YF

Axis 4

Reverse run JOG start

X10

Axis 1

 

 

Y10

Axis 1

 

X11

Axis 2

 

Start complete

Y11

Axis 2

Positioning start

X12

Axis 3

 

Y12

Axis 3

 

 

 

X13

Axis 4

 

 

Y13

Axis 4

 

X14

Axis 1

 

 

Y14

Axis 1

 

X15

Axis 2

 

Positioning complete

Y15

Axis 2

Execution prohibition flag

X16

Axis 3

 

Y16

Axis 3

 

 

 

X17

Axis 4

 

 

Y17

Axis 4

 

X18

 

 

 

Y18

 

 

X19

 

 

 

Y19

 

 

X1A

 

 

 

Y1A

 

 

X1B

 

 

Use prohibited

Y1B

 

Use prohibited

X1C

 

 

Y1C

 

 

 

 

 

 

X1D

 

 

 

Y1D

 

 

X1E

 

 

 

Y1E

 

 

X1F

 

 

 

Y1F

 

 

Important

[Y1 to Y3], [Y18 to Y1F], [X2, X3], and [X18 to X1F] are used by the system, and cannot be used by the user.

If these devices are used, the operation of the QD75 will not be guaranteed.

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Mitsubishi Electronics QD75P Signal direction QD75 PLC CPU Signal direction PLC CPU QD75, Use prohibited, Axis Code on