Icfcnt Instruction - Mitsubishi MELSEC-L series Programming Manual

8.2.7

ICFCNT instruction

ICFCNT1
ICFCNT2
Structured ladder
ICFCNT1
EN ENO
d
Input argument EN: Executing condition
Output argument ENO: Execution result
d:
Start number of the device that stores the measured frequency
value
Setting
data
d
Function
This instruction measures a frequency of the specified CH (refer to the following) according to
the settings such as the frequency measurement unit time setting.
• ICFCNT1: CH1
• ICFCNT2: CH2
The measured value is stored to
at the rising pulse of the ICFCNT instruction execution command, and ends at the falling pulse.
Program Example
The following program executes the frequency measurement of CH 1 while M0 is ON.
[Structured ladder]
[ST]
ICFCNT1(M0, D100);
ST
ENO:= (EN, d);
ICFCNT1
Internal device
R, ZR
Bit Word Bit
−
at the ICFCNT instruction execution. The measurement starts
d
8.2 Counter Function Dedicated Instruction
ICFCNT1, ICFCNT2
ICFCNT1, ICFCNT2
indicates any of the following
instructions.
ICFCNT1
ICFCNT2
:Bit
:Bit
:ANY32
J \
Zn
U \G
Word
−
8.2.7 ICFCNT instruction
8
L CPU
Constant Others
−
8-25