Table of Contents
Advertisement
6
FUNCTIONS
(e) Instructions do not operate normally at online change
When online change is performed, the following instructions do not operate
normally.
• Trailing edge instruction
• Leading edge instruction
1) Trailing edge instruction
The trailing edge instruction is executed when the instruction is in a writing
range even the execution condition(ON
completion of online change.
Completion of online change
END
X100 status
ON
X100
OFF
OFF
OFF
ON
M0
OFF
ON
X100
OFF
ON
ON
ON
M0
OFF
ON
X100
OFF
ON
OFF
ON
M0
OFF
Diagram 6.27 Trailing edge instruction operation
The corresponding instructions are LDF,ANDF,ORF,MEF,PLF.
6.14 Writing in Program during CPU Module RUN
OFF) is not established at the
X100
[ PLF M0 ]
A
0
END
0
A
END
0
1 scan
Trailing edge instruction is
executed even the execution
condition is OFF
6.14.1 Online change in ladder mode
OFF.
6
- 57
1
2
3
4
5
6
7
8
Advertisement
Table of Contents
