Mitsubishi MELSEC Q Series Programming Manual page 366

SPD
6.8.7
Pulse density measurement (SPD)
SPD
SPD
Setting
Data
S
n
D
Function
(1) The number of turning OFF ON input of the device specified by
amount of time specified by n, and the count results are stored in the device specified by
Execution command
S
(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.
6-164
Command
: Pulse input (bits)
S
n : Measurement time (unit: ms) (BIN 16 bits)
: Head number of the devices where the measurement result will be stored (BIN 16 bits)
D
Internal Devices
R, ZR
Bit Word
––
(Only X)
*1 *1
––
*1
Start of measurement
n [ms]
ON
OFF
ON
OFF
Measurement result is stored at (D)
High
Basic
performance
SPD S
J \
U \G
Bit Word
––
––
*1: Local devices and the file registers set for individual programs cannot be used.
Process
Redundant Universal
n
D
Constants
Zn Other
K, H
is counted for just the
S
n [ms]
Measurement result is stored at (D)
LCPU
––
––
––
.
D