3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.5 RUN, STOP, PAUSE Operation Processing
3
- 62
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 with
Intelligent Function
Module
8
Parameters
(4) CPU module operation processing by switch operation
Note35
POINT
The CPU module performs the following in any of RUN, STOP, and PAUSE
status:
• I/O module refresh processing
• Network module refresh processing
• Automatic refresh processing of intelligent function module
• Self-diagnostic processing
• Communication processing with external device such as GX Developer
• Processing of instructions dedicated to intelligent function modules
(completion processing only)
If placed in the STOP or PAUSE status, therefore, the CPU module can perform I/
O monitor and test operation using GX Developer, read/write from/to the external
device using the MC protocol, communication with the other stations on
MELSECNET/H, and communication with CC-Link remote stations.
Table3.6 Operation processing by switch operation
RUN/STOP
status
CPU module operation processing
Sequence
program
operation
processing
External output
Device memory
M,L,S,T,C,D Y
RUN STOP
Executes up to
the END
instruction and
stops.
Saves the output (Y)
status immediately
before switching to the
STOP status, and turns
all points OFF.
Saves the device memory
status immediately before
switching to the STOP
status.
Saves the output (Y)
status immediately
before switching to
the STOP status,
and turns all points
OFF.
STOP RUN Starts at step 0.
Determined by the
"STOP RUN-time
output mode" in the
PLC parameter dialog
box.
Saves the device memory
status immediately before
switching to the STOP
status.
However, when the initial
device values have been set,
the values are used.
Clears the local
devices
Note3.35
.
Determined by the
"STOP RUN-time
output mode" in the
PLC parameter
dialog box.
( Section 6.4)
Note35
Basic
Note3.35
Since the Basic model QCPU and Redundant CPU cannot use low speed execution type
programs, the low speed END processing is not performed.
Note3.35
Redundant
Basic