14DEDICATED INSTRUCTIONS

[Control data]

MELSEC-Q

Device

Item

 

Setting data

Setting range

Setting side

 

 

 

 

 

( 1)

(S)+0

System area

 

 

 

The state at the time of completion is stored.

 

 

(S)+1

Complete status

• 0

: Normal completion

System

Other than 0: Abnormal completion (error code)( 2) The following signal states taken in from the servo

(S)+2

Signal received from

amplifier to the input module are written.

b0: 0/1

User

servo amplifier

• b0: ABS data bit 0

b1: 0/1

 

• b1: ABS data bit 1

b2: 0/1

 

 

 

 

 

 

• b2: Transmission data READY flag

 

 

 

 

The ON/OFF states of the following data which are

 

 

 

 

calculated using the dedicated instructions by the

 

 

(S)+3

Signal transmitted to

"signals received from the servo amplifier" and output to

System

servo amplifier

the servo amplifier are stored.

 

• b0: Servo amplifier ON

 

 

 

 

 

 

 

 

• b1: ABS transfer mode

 

 

 

 

• b2: ABS request flag

 

 

 

 

Status of communication with servo amplifier

 

 

(S)+4

Status

• 0

: Communication completed

0

User/system

 

(Set by user at communication start)

 

 

 

 

 

 

 

• Other than 0: During communication (System stores)

 

 

(S)+5 to

System area

 

(S)+7

 

 

 

 

 

 

1: The data on the setting side is as follows.

 

 

 

• User

: Data before the execution of dedicated instructions is stored by user.

 

 

System: Data after the execution of dedicated instruction is stored by PLC CPU. 2: Refer to Section 15.2 for error codes at abnormal completion.

[Functions]

(1)The positioning data is read from the servo amplifier capable of processing the absolute positions of the axes to be set (See below), and the values converted with respect to a unit are stored in " Md.20 current feed value" and " Md.21 machine

feed value" area of the QD75.

ABRST1: Axis 1

ABRST2: Axis 2

ABRST3: Axis 3

ABRST4: Axis 4

For absolute position detection system, carry out the absolute position restoration operation each time the power is turned ON or PLC CPU is reset.

PLC CPU

Control data

Servo amplifier

 

 

Input module

 

 

 

(S)+0

 

 

 

 

 

 

 

 

(S)+1

 

 

 

 

Output module

 

 

(S)+2

 

 

 

 

 

 

 

 

 

 

 

 

(S)+3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(S)+4

 

 

 

 

 

 

 

 

(S)+5

 

 

 

 

 

 

 

 

(S)+7

ABRST

QD75

Current

feed value

Machine

feed value

Current value data

14 - 4

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Mitsubishi Electronics QD75P, QD75D user manual Control data, Functions