11 TROUBLESHOOTING

MELSEC-Q

Special Register List (Continued)

 

 

 

 

 

 

 

 

 

 

 

Set by

Corresponding

Corresponding

Number

Name

Meaning

 

 

Explanation

 

 

 

(When

ACPU

 

 

 

 

 

CPU

 

 

 

 

 

 

 

 

 

 

 

set)

D9

 

 

 

 

 

 

 

 

 

 

 

 

SD651

 

 

• Stores the comment file name (with extension) selected at the

 

 

 

 

 

 

parameters or by the QCDSET instruction in ASCII code.

 

 

 

 

 

 

 

 

 

 

 

 

 

SD652

 

 

 

B15

to

B8

B7

to

B0

 

 

 

 

 

 

SD651

 

Second character

 

 

First character

 

 

 

 

 

SD653

 

 

 

 

 

 

 

 

 

Comment file

Comment file

SD652

 

Fourth character

 

 

Third character

 

 

S (Status

New

 

 

name

name

SD653

 

Sixth character

 

 

Fifth character

 

 

change)

 

SD654

 

 

 

 

 

 

 

 

 

 

 

 

 

SD654

 

Eighth character

 

 

Seventh character

 

 

 

 

 

 

 

 

 

 

 

 

SD655

 

 

SD655

First character of extension

 

2EH(.)

 

 

 

 

 

 

 

SD656

Third character of extension

Second character of

 

 

 

 

 

 

 

 

 

 

 

SD656

 

 

 

extension

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Boot

 

 

 

 

 

 

 

 

 

 

 

SD660

 

designation

• Stores the drive number where the boot designation file (

.QBT) is

S (Initial)

New

 

 

file drive

being stored.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

number

 

 

 

 

 

 

 

 

 

 

 

SD661

Boot

 

• Stores the file name of the boot designation file ( .QBT).

 

 

 

 

 

 

operation

 

 

B15

to

B8

B7

to

B0

 

 

 

SD662

 

 

 

 

 

 

SD661

 

Second character

 

 

First character

 

 

 

 

 

designation

File name of

 

 

 

 

 

 

 

 

SD663

SD662

 

Fourth character

 

 

Third character

 

 

 

 

 

file

boot

 

 

 

 

 

 

 

 

SD663

 

Sixth character

 

 

Fifth character

 

 

S (Initial)

New

 

 

 

designation

 

 

 

 

 

 

SD664

 

SD664

 

Eighth character

 

 

Seventh character

 

 

 

 

 

 

 

 

 

 

 

 

file

SD665

First character of extension

 

2EH(.)

 

 

 

 

 

SD665

 

 

 

 

 

 

 

 

 

SD666

Third character of extension

Second character of

 

 

 

 

SD666

 

 

 

extension

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(6) Instruction-Related Registers

 

 

 

 

 

 

 

 

 

Set by

Corresponding

Corresponding

Number

Name

Meaning

 

Explanation

 

 

 

(When

ACPU

 

 

 

 

CPU

 

 

 

 

 

 

 

 

 

set)

D9

 

 

 

 

 

 

 

 

 

 

SD705

 

 

• During block operations, turning SM705 ON makes it possible to use

 

 

 

 

 

the mask pattern being stored at SD705 (or at SD705 and SD706 if

 

 

 

 

Mask pattern

Mask pattern

U

New

 

SD706

double words are being used) to operate on all data in the block with

 

 

 

 

 

 

 

 

the masked values.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Number of

 

 

 

 

 

 

 

 

 

 

 

vacant

 

 

 

 

 

 

 

 

 

 

SD714

communicati

0 to 32

• Stores the number of vacant blocks in the communications request

S (During

D9081

QnA

 

on request

 

area for remote terminal modules connected to the AJ71PT32-S3.

execution)

 

 

 

registration

 

 

 

 

 

 

 

 

 

 

 

areas

 

 

 

 

 

 

 

 

 

 

SD715

 

 

• Patterns masked by use of the IMASK instruction are stored in the

 

 

 

 

 

following manner:

 

 

 

 

 

 

 

 

 

 

 

B15

 

B1

B0

 

 

 

 

 

IMASK

 

 

 

 

S (During

 

 

 

 

 

 

 

 

SD716

instruction

Mask pattern

SD715

l15

to

l1

l0

 

New

 

 

execution)

 

 

mask pattern

 

SD716

l31

to

l17

l16

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SD717

 

 

SD717

l47

to

l33

l32

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

SD718

Accumulator

Accumulator

• For use as replacement for accumulators used in A-series programs.

S/U

New

 

SD719

 

 

 

 

 

 

 

 

 

 

 

 

 

Program No.

Program No.

• Stores the program number of the program to be loaded by the

 

 

 

 

designation

designation

 

 

 

SD720

PLOAD instruction when designated.

 

 

 

U

New

QCPU

for PLOAD

for PLOAD

 

 

 

 

• Designation range: 1 to 124

 

 

 

 

 

 

 

 

instruction

instruction

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

No. of vacant

 

 

 

 

 

 

 

 

 

 

 

registration

 

• Stores the number of vacant registration area for the request for

 

 

 

 

area for CC-

 

S (During

 

 

SD730

0 to 32

communication with the intelligent device station connected to

New

QnA

Link

execution)

 

 

A(1S)J61QBT61.

 

 

 

 

 

 

 

 

communicati

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

on request

 

 

 

 

 

 

 

 

 

 

SD736

PKEY input

PKEY input

• Special register that temporarily stores keyboard data input by means

S (During

New

QnA

of the PKEY instruction.

 

 

 

 

 

execution)

 

 

 

 

 

 

 

 

 

 

11 - 82

11 - 82