Mitsubishi Q02CPU

10
CPU MODULE PROCESSING TIME
10.1 Scan Time
10.1.1 Scan time structure
10
- 1
9
Device Explanation
10
CPU Module Processing Time
11
Procedure for Writing Program to CPU Module
AppendicesIndex
CHAPTER10 CPU MODULE PROCESSING TIME
This chapter explains the CPU module processing time.
10.1 Scan Time
This section explains the scan time structures and CPU module processing time.
10.1.1 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.
Diagram 10.1 Scan time structure of Basic model QCPU
END processing time and
the relevant instruction
( Section 10.1.2 (3))
Processing in RUN status
STOP/PAUSE processing
STOP/PAUSE status
RUN status
Program check
I/O refresh
Common processing time
( Section 10.1.2 (9))
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
Error clear
(No processing performed
when there is no clear direction)
Calendar update processing
(No processing peformed
when there is no update direction)
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
( Section 10.1.2 (7))
Module refresh time
( Section 10.1.2 (6))
Instruction execution time
( Section 10.1.2 (4))
I/O refresh time
( Section 10.1.2 (1))
Execution time of various
functions processed at END
( Section 10.1.2 (5))
Scan time