Chapter11 Cpu Module Processing Time; Scan Time; Scan Time Structure - Mitsubishi Q00JCPU User Manual

11
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
11
- 1 11.1 Scan Time
11.1.1 Scan time structure
Processing in RUN status
END processing of DUTY instruction
(No processing performed when DUTY
instruction is not executed)
CC-Link IE controller network refresh
Refresh by intelligent function module
parameter set on GX Configurator
Various function compatibility
(No processing performed when not set)
WDT reset scan time calculation
STOP/PAUSE status
Operation status identification
STOP/PAUSE processing
information check (update)
* 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
Program check
I/O refresh
Program execution
NO
1
Is program terminated? *
YES
MELSECNET/H refresh
CC-Link refresh
2
processing *
Service processing
Constant wait processing
RUN status
Hardware and system
I/O refresh time
( Section11.1.2 (1))
END processing time and the
relevant instruction
( Section11.1.2 (3))
Instruction execution time
( Section11.1.2 (4))
Module refresh time
( Section11.1.2 (6))
Scan time
Execution time of various
functions processed at END
( Section11.1.2 (5))
Service processing time
( Section11.1.2 (7))
Common processing time
( Section11.1.2 (9))