6
FUNCTIONS
6.12 Writing in Program during CPU Module RUN
6.12.3 Precautions for online change
6 - 87
1
Overview
2
Performance
Specification
3
Sequence Program
Configuration and
Execution Conditions
4
I/O Nunber Assignment
5
Memories and Files
Handled by CPU Module
6
Functions
7
Communication using
built-in Ethernet ports of
CPU module
8
Communication with
Intelligent Function
Module
(b) Leading edge instruction
The leading edge instruction is not executed when the instruction is in a writing
range even the execution condition(OFF ON) is established at the completion
of online.
The corresponding instructions are PLS, P.
(c) SCJ instruction
When the SCJ instruction is in a writing range and the execution condition is ON
at the completion of the writing, a jump to the designated pointer occurs even in a
scan cycle.
Figure 6.56 Leading edge instruction operation
Figure 6.57 SCJ instruction operation
END
1 scan
END END00 0
OFF OFF
ON
OFF
OFF
OFF
OFF
OFF
OFF
ON
ON
ON
ON
ON
ON ON
X0 status
X0
M0
X0
M0
X0
M0
[ PLS M0 ]
X0
A
A
OFF ON
Completion of online change
The leading edge instruction is not
executed even the execution
condition is OFF ON.
END
1 scan
END END00 0
OFF OFF
ON ON
X0 status
[ SCJ P0 ]
X0
A
A
OFF ON
X0
OFF
ON
SCJ command
X0
OFF
ON
SCJ command
X0
OFF
ON
SCJ command
Completion of online change
Jumps to the designated pointer.
Jumps to the designated pointer.
Jumps to the designated
pointer even in a scan
cycle.
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