Mitsubishi Electric FX3G SERIES Programming Manual page 601

Programmable controllers

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Series Programmable Controllers

Programming Manual - Basic & Applied Instruction Edition

If two or more DHCMOV instructions are used in one input interrupt program, only the first instruction (just after

the interrupt pointer) is executed when the interrupt is generated.

The rest of the interrupt, including additional DHCMOV instructions, is executed according to normal interrupt

Do not use M8394 as the command contact for the DHCMOV instructions following the first.

It is not permitted to use DHCMOV instruction for the same counter in two or more input interrupt programs.

While input interrupts are disabled by the interrupt disable flags (shown in the table below), DHCMOV instructions

are not executed when they are placed inside a corresponding interrupt.

Interrupt disable flag

*1.Cleared when the PLC mode is changed from RUN to STOP.

If an input interrupt is generated while input interrupts are disabled by something other than the interrupt disable

flags M8050 to M8055 (after execution of DI instruction and before execution of EI instruction), DHCMOV

instruction is immediately executed, but execution of the interrupt program is held. The interrupt program will be

executed after EI instruction is executed and interrupts are enabled.

Function change depending on the version

The function of FNC189 instruction changes depending on the version as shown in the table below.

Applicable version

An operation error occurs in the following case; The error flag M8067 turns ON, and the error code is stored in D8067.

• When a device specified in

Same counter

Corresponding interrupt pointer

Target device

24.5 FNC189 – HCMOV / High-Speed Counter Move

When the input X003 turns from OFF

to ON (that is, when input interrupt is

When this instruction is executed in

interrupt program:

Input number corresponding to interrupt pointer

Outline of function

Ring counter (D8099 and D8398) can be specified in

] is outside the allowable range (error code: K6705)

24 Others – FNC181 to FNC189

Fx3u series Fx3uc series