Mitsubishi Q00JCPU User Manual page 386

6
FUNCTIONS
(3) Instructions do not operate normally at online change
6
- 86 6.12 Writing in Program during CPU Module RUN
6.12.3 Precautions for online change
When online change is performed, the following instructions do not operate normally.
• Trailing edge instruction
• Leading edge instruction
• SCJ instruction
(a) Trailing edge instruction
The trailing edge instruction is executed when the instruction is in a writing range
even the execution condition(ON
online change.
For preventing the trailing edge instruction execution, refer to POINT in this
section.
Completion of online change
END
X0 status
ON
X0
OFF
OFF OFF
ON
M0
OFF
ON
X0
OFF
ON ON
ON
M0
OFF
ON
X0
OFF
ON OFF
ON
M0
OFF
Figure 6.55 Trailing edge instruction operation
The corresponding instructions are LDF,ANDF,ORF,MEF,PLF,FCALLP,EFCALLP.
OFF) is not established at the completion of
X0
[ PLF M0 ]
A A
0 END 0 END 0
1 scan
Trailing edge instruction is
executed even the execution
condition is OFF OFF.