Mitsubishi MELSEC-F FX1N-40MT-001 - AC110 V Programming Caution

FX1N Series Programmable Controllers Inputs 5.
5-7
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