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SPD

Pulse density measurement (SPD)

SPD

*1: Local devices and the file registers set for individual programs cannot be used.

Function

(1) The number of turning OFF ON input of the device specified by 

 is counted for just the 

amount of time specified by n, and the count results are stored in the device specified by 

.

(2) When measurement directed by the SPD instruction has been completed, measurement is 

done again from 0.
Turn OFF the execution command to stop the measurement directed by the SPD instruction.

  : Pulse input (bits)

 n  : Measurement time (unit: ms) (BIN 16 bits)

: Head number of the devices where the measurement result will be stored (BIN 16 bits)

Setting 

Data

Internal Devices 

R, ZR

J

\

U

\G

Zn

Constants

K, H

Other

Bit

Word

Bit

Word

 (Only X)

––

––

––

n

 *1

 *1

––

––

 *1

––

––

Basic

Redundant

Command

SPD

n

S

D

SPD

S

D

S

D

S

D

ON

OFF

OFF

Execution command

Start of measurement

n [ms]

n [ms]

Measurement result is stored at (D)

ON

S

Measurement result is stored at (D)