Mitsubishi Q02CPU User Manual

3
SEQUENCE PROGRAM CONFIGURATION AND
EXECUTION CONDITIONS
3.3 Settings for Creation and Execution of Multiple Sequence Programs
3.3.1 Initial execution type program
3 - 31
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
3) When interrupt program/fixed scan execution type program is executed
When an interrupt program/fixed scan execution type program is executed
before completion of the initial execution type program execution, the interrupt
program/fixed scan execution type program execution time is added to the
initial execution type program execution time.
(c) Initial execution monitoring time
The initial execution monitoring time is a timer for monitoring the initial scan time.
The setting range is 10 to 2000ms (setting unit: 10ms).
The initial execution monitoring time is not set by default. (There is no default
value.) Set the time on the PLC RAS setting tab of PLC parameter. ( (4)(b) in
this section)
1) Exceeding the initial execution monitoring time
A "WDT ERROR" occurs when the initial scan time exceeds the preset initial
execution monitoring time.
The CPU module stops the operation.
POINT
1. When an initial execution type program and low speed execution type
program
Note3.20
are to be executed, the low speed execution type
program( Section 3.3.3)is executed after completion of the initial
execution type program.Note19
As the initial execution monitoring time, set a value greater than the total
execution times of the initial execution type program and low speed execution
type program.
2. When the initial execution monitoring time is set, the error of the measure-
ment value is 10ms.
When the initial execution monitoring time (t) is set to 10ms, a "WDT ERROR"
occurs within a scan time range of 10ms<t<20ms.
(3) Precautions for initial execution type program creation
In initial execution type programs, instructions that require several scans until
execution completion (instructions where completion devices exist) cannot be used.
Example: SEND, RECV and similar instructions
Note19
Redundant
Universal
UD
Note3.20
Note3.20
Since the Redundant CPU and Universal model QCPU cannot use low speed execution type
programs, it is not necessary to take into account the low speed execution type program
execution time when setting the initial execution monitoring time.
Redundant
Universal
UD
Note3.20Note3.20

Mitsubishi Q02CPU Specifications

General

Brand	Mitsubishi
Model	Q02CPU
Category	Controller
Language	English