Instructions That May Need A Replacement At Instruction Conversion From Anscpu To Qcpu - Mitsubishi Electric MELSEC Q Series Handbook

7
REPLACEMENT OF PROGRAM
7.2.3 Instructions that may need a replacement at instruction conversion from
AnSCPU to QCPU
Some instructions are not automatically converted upon the replacement of the AnS series CPU with Q
series CPU.
The following table shows the instructions that are not automatically converted. Reviewing the program
is recommended.
Item
Instruction type
No.
Sequence
(1)
instruction
Basic
(2)
instruction
Application
(3)
instruction
instruction
Bit device output reverse CHK
Program switching instruction CHG
SUB
Microcomputer program call
instruction
SUBP
ASCII characters convert
ASC
instruction
LRDP
MELSECNET (II), /B
LWTP
Local, Remote I/O station
RFRP
access instruction
RTOP
LED
LEDA
Display instructions (except
dedicated instruction) LEDB
LEDC
Special format failure checks
CHK
instruction
SLT
Status latch instruction
SLTR
STRA
Sampling trace instruction
STRAR
STC
Carry flag instruction
CLC
Print ASCII code instruction PR
Print comment instruction PRC
AnSCPU
(Counter Measure)
Review the program and change manually.
(Supplement)
Change candidate instruction: [FF] instruction
(Counter Measure)
Review the program with referring to Section 7.7.10.
(Counter Measure)
Change manually to the same instructions of the Q series.
(Counter Measure)
Review the program and change manually.
(Supplement)
Change candidate instruction: [$MOV] instruction
(Counter Measure)
Reprogram for the network modules to use with a QCPU.
(Counter Measure)
Setting an external display is recommended since the QCPU does
not have the LED display function.
(Counter Measure)
Replace the instruction by using an alternative program.
(Counter Measure)
There is no alternative action.
(Counter Measure)
Review the program and change manually.
(Supplement)
Change candidate instructions:
[STRA]  [TRACE] instruction
[STRAR]  [TRACER] instruction
(Counter Measure)
Review the program and change manually.
(Supplement)
Change candidate instructions:
[STC]  [SET SM700] instruction
[CLC]  [RST SM700] instruction
(Counter Measures)
Replace the instruction by using an alternative program.
Corrective action
*1
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