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35 Interrupt Function and Pulse Catch Function
817
FXCPU Structured Programming Manual
[Basic & Applied Instruction]
31
Applied Instructions
(Data Transfer 3)
32
Applied Instructions
(High Speed
Processing 2)
33
Applied Instructions
(Extension File
Register Control)
34
Applied Instructions
(FX
3U
-CF-ADP)
35
Interrupt Function
and Pulse Catch
Function
A
Relationships
between devices
and addresses
B
Applied
Instruction List
35.8 Pulse width/Pulse period measurement function [M8075 to M8083, D8074 to D8097]
2. Cautions on use
• The pulse width/pulse period measurement function and input interrupts can be used at the same time in a
same input terminal.
• When a same input terminal is used by the pulse width/pulse period measurement function and the SPD,
DSZR or ZRN instruction, an operation error occurs when the instruction is executed.
• The input terminal used for the pulse width/pulse period measurement function cannot be used for the
pulse catch function.
• When a same input terminal is used by the pulse width/pulse period measurement function and a high
speed counter, a grammatical error occurs.
• Make sure that the total frequency of four input channels is 50 kHz or less when using the pulse width/
pulse period measurement function.
• When the pulse width/pulse period measurement function and a high speed counter are used together, the
overall frequency of the high speed counter is affected.
→ FX Structured Programming Manual [Device & Common]