Programming Caution - Mitsubishi FX1N-14MR-ES/UL Hardware Manual

FX1N Series Programmable Controllers
5.2.2

Programming Caution

When using 110V AC units, high speed counter and interrupt routines are not suitable for use
due to the long 'ON/OFF' times. The following instructions are also not suitable.
FNC 52 MTR
FNC 56 SPD
FNC 72 DSW
Inputs 5.
5-6