Mitsubishi Electric MELSEC iQ-R Series Programming Manual page 122

Processing details
■Dead time processing
When the operation signal (INVLD) is FALSE, this function block outputs the input value from the input variable IN with a delay
by the dead time from the output variable OUT_.
Ex.
When the sampling count (SN) is 3
Input (IN)
Output (OUT_)
Output delays the Dead time=ST_×SN(s) for input
Besides, when "output switching when initialized"
Input =Output
(OCHG)=1, the initial ST_×SN(s) outputs initial input value (Ys)
(1)
ST_
YS
ST_1
Operation
signal
TRUE
(INVLD)
No. Operation
signal (INVLD)
(1) TRUE (Invalid)
(2) FALSE (Valid)
(3)
INVLD: Operation signal
OCHG: Output switching when initialized
Ys: Initial output value
IN: Input value
OUT_: Output value
ST_: Data collection interval (s)
SN: Sampling count
• When the sampling count (SN) is 0, the output (OUT_) value equals to the input (IN) value.
■Operation signal
When the operation signal (INVLD) is FALSE: Dead time operation is valid.
When the operation signal (INVLD) is TRUE: Dead time operation is invalid.
8 CONTROL OPERATION
120
8.4 Dead Time (M+P_DED)
SN
Input
ST_ ST_
(2)
(3)
ST_2 ST_3 ST_4 ST_5
FALSE
Output switching when
initialized (OCHG)
Optional (0 or 1)
0
1
Output
ST_6 ST_7 ST_8 ST_9
Dead time Output (OUT_)

Outputs (OUT_) the input (IN) value.
ST_  SN
Outputs (OUT_) the input values (IN) that are input when the
operation signal (INVLD) changes from TRUE to FALSE from the
beginning of operation to the SN time.
After the SN time, OUT_ outputs the value of IN
ST_  SN
Outputs (OUT_) the initial output value (Ys) from the beginning of
operation to the SN time.
After the SN time, OUT_ outputs the value of IN
Input = Output
(1)
t
TRUE
.
n - SN
.
n - SN