Mitsubishi Electric MELSEC iQ-F FX5 Programming Manual page 591

■Applicable devices
Operand Bit
X, Y, M, L, SM,
F, B, SB, S
*1

(s1)

(s2)

(d)
*1 When a bit device is specified, specify one of X0 to X17.
Only X can be used for a bit device.
The nibble of a bit device cannot be specified.
*2 When a word device is specified, specify one of the channel numbers (CH1 to CH8).
When FX3 compatible function of a high-speed counter is valid, a channel number cannot be specified. Only X can be used for a bit
device.
If the channel numbers is specified in (s1), an error occurs.
Processing details
• This instruction counts the number of times the device input specified by (s1) turns off  on only for the time (in 16-bit data
units) specified by (s2)  1ms and stores the operation result in the device specified by (d).
Counting start
ON
OFF
Execution
command
ON
(s1)
OFF
(1): The elapsed time is judged using the 1ms interrupt and the counted result is stored in (d).
• The channel number of the high-speed counter specified by (s1) interlocks with the channel number in which parameters
are set.
• When a word device is specified by (s1), this instruction counts the number of pulses by the high-speed counter setting of
the channel number corresponding to each word device.
• When a bit device is specified by (s1), the following input assignment devices (shaded area) are valid.
• When the high-speed counter FX3 compatibility function is enabled, only the 1-phase 1-input pulse input mode (S/W)
(general-purpose input assignment of the 1-phase 1-input counter (switching S/W up or down)) is enabled.
General-purpose input assignment of the 1-phase 1-input counter (switching S/W up or down)
U/D: UP/DOWN pulse input, P: Preset input (reset), E: Enable input (start)
X0 X1 X2
CH1 U/D(A)
CH2 U/D(A)
CH3
U/D(A)
CH4
CH5
CH6
CH7
CH8
If one of X10 to X17 is specified as a device, an error occurs.
Word
T, ST, C, D, W, U\G
SD, SW, R
*2
 
 
 
(s2)ms
(1)
X3 X4 X5 X6
U/D(A)
U/D(A)
U/D(A)
U/D(A)
Double word Indirect
specification
Z LC LZ
   
   
   
(s2)ms
X7 X10 X11 X12
P E
P
P E
P
U/D(A)
Constant Others
K, H E $
   
   
   
(1)
X13 X14 X15 X16 X17
E
P E
P
E
P E
P
8 APPLICATION INSTRUCTION
8.17 Pulse Related Instruction
8
E
E
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