Mitsubishi Q00CPU, User Manual

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- 1 11.1 Scan Time
11.1.1 Scan time structure
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CPU MODULE PROCESSING TIME
CHAPTER11 CPU MODULE PROCESSING TIME
This chapter explains the CPU module processing time.
11.1 Scan Time
This section explains the scan time structures and CPU module processing time.
11.1.1 Scan time structure
The CPU module scan time consists of the followings processings.
The CPU module performs the following processings cyclically in the RUN status.
(1) Scan time structure of Basic model QCPU
* 1 : Program end indicates the timing when the END, GOEND, FEND or STOP instruction is executed.
* 2 : Indicates a calendar update or error clear.
Figure 11.1 Scan time structure of Basic model QCPU
Processing in RUN status
STOP/PAUSE processing
STOP/PAUSE status
RUN status
Program check
CC-Link IE controller network refresh
I/O refresh
Common processing time
END processing of DUTY instruction
(No processing performed when DUTY
instruction is not executed)
Is program terminated? *
1
NO
YES
Operation status identification
MELSECNET/H refresh
CC-Link refresh
Refresh by intelligent function module
parameter set on GX Configurator
Various function compatibility
processing *
2
Service processing
Constant wait processing
(No processing performed when not set)
WDT reset scan time calculation
Hardware and system
information check (update)
Program execution
Service processing time
Module refresh time
Instruction execution time
I/O refresh time
Scan time
END processing time and the
relevant instruction
Execution time of various
functions processed at END
( Section11.1.2 (1))
( Section11.1.2 (3))
( Section11.1.2 (4))
( Section11.1.2 (6))
( Section11.1.2 (5))
( Section11.1.2 (7))
( Section11.1.2 (9))