Mitsubishi Electric MELSEC FX Series - Page 614

7 Applied Instructions
7.18 Others
612
FXCPU Structured Programming Manual
(Basic & Applied Instruction)
4) It is not permitted to use DHCMOV instruction for the same counter in two or more input interrupt
programs.
5) 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.
*1. 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 interrupt are enabled.
6) Some restrictions to the applicable devices
S: Only the high speed counters (C235 to C255) and ring counters (D8099, D8398)
*1
can be specified.
*1. The FX
3UC PLCs of before Ver. 2.20 (not inclusive) cannot specify the ring counter (D8099,
D8398).
Function change depending on the version
The function of this instruction changes depending on the version as shown in the table below.
Error
An operation error occurs in the following case. The error flag M8067 turns ON, and the error code is stored
in D8067.
1) When a device specified in or is outside the allowable range (error code: K6705)
Interrupt disable flag Corresponding interrupt pointer Input number corresponding to interrupt pointer
M8050
*1
I000,I001 X000
M8051
*1
I100,I101 X001
M8052
*1
I200,I201 X002
M8053
*1
I300,I301 X003
M8054
*1
I400,I401 X004
M8055
*1
I500,I501 X005
Applicable version
Item Outline of function
FX3U FX3UC
Ver. 2.20 or later Ver. 2.20 or later Target device
Ring counter (D8099 and D8398) can be specified in the device specified by
.
Same counter
M8394
M8394
VAR_01 is a global label and is defined as D0.
VAR_01 is a global label and is defined as D2.
*1.
*2.
DHCMOV
EN ENO
d
s
n
C236
VAR_01
*1
K0
IRET
EN ENO
DHCMOV
EN ENO
d
s
n
C236
VAR_02
*2
K0
IRET
EN ENO
[Interrupt program]
(Event: I000)
[Interrupt program]
(Event: I200)