Справочник Пользователя для Mitsubishi Electronics QCPU

7-388

DUTY

Timing pulse generation (DUTY)

DUTY

*1: Only SM420 to SM424, SM430 to SM434 can be used.

Function

(1) Turns the user timing clock (SM420 to SM424, SM430 to M434), designated by 

, ON for 

the duration equivalent to the number of scans specified by n1, and OFF for the duration 
equivalent to the number of scans specified by n2.

(2) Scan execution type programs use SM420 to SM424, and low speed execution type 

programs use SM430 to SM434.

(3) The following will take place if both n1 and n2 have been set for 0:

(a) n1 0, n2 0    SM420 to SM424 and SM430 to SM434 will stay OFF.

(b) n1 0, n2 0    SM420 to SM424 and SM430 to SM434 will stay ON.

(4) The data designated by n1, n2, and 

 is registered with the system when the DUTY 

instruction is executed, and the timing pulse is turned ON and OFF by END processing.

Operation Error

(1) In any of the following cases, an operation error occurs, the error flag (SM0) turns ON, and 

an error code is stored into SD0.

 • The device designated by 

 is not from SM420 to SM424 or SM430 to SM434.

(Error code: 4101)

 • The values of n1 and n2 are less than 0.

(Error code: 4100)

n1 : Number of scans for ON (BIN 16 bits)
n2 : Number of scans for OFF (BIN 16 bits)

: User timing clock (SM420 to SM424, SM430 to M434) (bits)

Setting 

Data

Internal Devices 

R, ZR

J

\

U

\G

Zn

Constants

K, H

Other

Bit

Word

Bit

Word

n1

––

n2

––

*1

––

––

Command

DUTY

n1

n2

D

DUTY

D

D

D

SM420 to SM424
SM430 to SM434

OFF

ON

n2 scans

n1 scans

D

D