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7 ONLINE CHANGE
7.1 Online Ladder Block Change
51
7
Instructions not compatible with online ladder block change
Do not execute online change to ladder block including the following instruction.
DSZR instruction, DVIT instruction, TBL instruction, DRVTBL instruction, PLSV instruction, DRVI instruction, DRVA
instruction, DRVMUL instruction, PLSY instruction, PWM instruction, SPD instruction, HIOEN instruction, UDCNTF LC
instruction, ABS instruction, ADPRW instruction, IVCK instruction, IVDR instruction, IVRD instruction, IVWR instruction,
IVBWR instruction, IVMC instruction, S.CPRTCL instruction, SP.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.
■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.
Pulse type instruction Description
Rising instruction (PLS and P
instructions)
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.
Falling instruction (PLF and F
instructions)
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.
(1) The rising instruction will not be executed even if the execution condition is
OFF to ON.
Online change completion
END
1 scan
END END00 0
OFF→OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON→ON
Status of X0
X0
M0
X0
M0
X0
M0
(1)
[ PLS M0 ]
X0
A
A
OFF→ON