Chapter 5 Instruction Specifications

Sequence instructions Classification

Item number

15

16

17

18

19

20

21

Ladder symbol

MPS

MRD

MPP

Instruction symbol

Instruction

Process descriptions

I/O types used

 

 

 

 

name

 

 

 

 

MPS

Operation

Stores the previous

None

 

 

result push

operation result.

 

 

 

 

 

MRD

Operation

Reads the stored operation

 

 

 

result read

result and continues

 

 

 

 

operation.

 

MPP

Operation

Reads the stored operation

 

 

 

result pull

result, continues operation

 

 

 

 

and clears the stored result.

 

ANB

Logical

Indicates serial connection

None

 

 

block serial

between two logical blocks.

 

 

 

connection

 

 

ORB

Logical

Indicates parallel

None

 

 

block

connection between two

 

 

 

parallel

logical blocks.

 

 

 

connection

 

 

[

]

Processing

Indicates start and end of a

None

 

 

box start

process box.

 

 

 

and end

 

 

(

)

Relational

Indicates start and end of a

None

 

 

box start

comparison box.

 

 

 

and end

 

 

R7F4

R7F3

R7F2

R7F1

R7F0

DER ERR SD

V

C

z

z

z

z

z

z z z z z

z z z z z

z z z z z

Process

time (s)

MICRO-EH

0.7

0.6

0.8

Steps

0

0

1

3

0

Remarks

2.Basic instructions (timer, counter)

Classification

numberItem

Ladder symbol

Instruction symbol

Instruction

Process descriptions

I/O types used

 

 

 

name

 

 

 

 

 

 

Timer

22

TD

TD

timer

operation.

When 0.01 s, it is

 

 

OUT

On delay

Indicates an on delay timer

TD0 to TD255

 

 

 

 

 

 

possible to use

 

 

 

 

 

 

until 0 to 63.

 

23

 

OUT

Single shot

Indicates a single shot

SS0 to SS255

 

 

SS

SS

 

operation.

When 0.01 s, it is

 

 

 

 

 

 

possible to use 0

Counter

 

 

 

 

 

to 63.

24

 

OUT

Counter

Indicates a counter

CU0 to CU255

 

 

 

 

CU

CU

 

operation.

 

 

25

 

OUT

Up of

Indicates an up operation of

CTU0 to

 

 

CTU

CTU

up/down

up-down counter.

CTU255

 

 

 

 

counter

 

 

 

26

 

OUT

Down of

Indicates a down operation

CTD0 to

 

 

CTD

CTD

up/down

of up-down counter.

CTD255

 

 

 

 

counter

 

 

 

27

 

OUT

Counter

Indicates a clear operation

CL0 to CL255

 

 

CL

CL

clear

for CU, RCU, CTU, CTD

 

 

 

 

 

 

and WDT.

 

R7F4

R7F3

R7F2

R7F1

R7F0

DER

ERR

SD

V

C

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

z

 

 

 

 

 

Process

time (s)

MICRO-EH

1.4

1.4

1.4

1.4

1.4

0.9

Steps

5

5

5

5

3

1

Remarks

Number overlap not allowed

5-3

Page 53
Image 53
Hitachi NJI-350B manual Basic instructions timer, counter