Mitsubishi Electric MELSEC iQ-F FX5 User Manual page 53

Instructions not compatible with online ladder block change
Do not execute online change to ladder block including the following instruction.
DSZR/DDSZR instruction, DVIT/DDVIT instruction, TBL instruction, DRVTBL instruction, PLSV/DPLSV instruction, DRVI/
DDRVI instruction, DRVA/DDRVA instruction, DRVMUL instruction, PLSY/DPLSV instruction, PWM/DPWM instruction, SPD/
DSPD instruction, HIOEN/DHIOEN instruction, UDCNTF instruction, DABS instruction, ADPRW instruction, IVCK instruction,
IVDR instruction, IVRD instruction, IVWR instruction, IVBWR instruction, IVMC instruction, S(P).CPRTCL instruction, RS2
instruction, SP.SOCOPEN instruction, SP.SOCCLOSE instruction, SP.SOCSND instruction, SP.SOCRCV instruction,
SP.ECPRTCL instruction, RBFM instruction, WBFM instruction
The cautions at the time of repeatedly performing online change
When online change is performed repeatedly, RUN writing may not be able to be carried out due to insufficient memory in the
CPU module. Please set the CPU module to STOP and write the program.
The operation when a pulse type instruction is included in the range of an online ladder
block change
The operation when a pulse related instruction is included in the range of an online ladder block change is as follows.
Pulse type instruction
Rising instruction (PLS and P
instructions)
Falling instruction (PLF and F
instructions)
■Rising instruction
When a rising instruction exists within the range to be changed, the rising instruction will not be executed if the execution
condition (OFF to ON) is fulfilled at completion of online program change.
Online change completion
A
END 0 END
Status of X0
ON
X0
OFF
OFF→OFF
ON
M0
OFF
ON
X0
OFF
ON
ON→ON
M0
OFF
ON
X0
OFF
OFF→ON
ON
M0
OFF
Description
When a rising instruction exists within the range to be changed, the rising instruction will not be executed if the
execution condition (OFF to ON) is fulfilled at completion of online program change.
When a falling instruction exists within the range to be changed, the falling instruction will not be executed even if the
execution condition (ON to OFF) is fulfilled at completion of online program change.
X0
[ PLS M0 ]
A
0 END 0
1 scan
(1)
(1) The rising instruction will not be executed even if the execution condition is
OFF to ON.
7.1 Online Ladder Block Change
7 ONLINE CHANGE
51
7