IDEC WindO/I-NV4, Руководство пользователя

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WindO/I-NV4 User’s Manual
30-9
1 Overview
30
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Operation of priority on control processing
■ Input refresh
Inputs on the expansion module are reflected in the Input (#I, #D and LEX).
■ Input delay
There is a delay for reflecting the expansion module input to the Input (#I, #D and LEX).
The delay time is as follows.
Minimum: 5 milliseconds
Maximum: 5 millis the execution period
■ I/O control
Executes the script that is set to Cyclic Script.
■ Output refresh
The Outputs (#Q, #D and LEY) are outputted to the expansion module.
Cyclic
Script
Display
processing
Input refresh
Output refresh
Input
Output
External
input
I/O control
Sleep
(Display
processing
executed)
Ends processing
the part at the bottom
of screen
Starts processing
the part at the top
of screen
Execution Period
Execution
Period
External
output
(#I, #D, LEX)
(#Q, #D, LEY)
Input delay
Output
delay
Execution Period
The HG5G/4G/3G/2G-V also performs output refresh when input refreshing.
There will be maximum input delay if input is made to the expansion
module immediately after the input refresh ends. The processor waits
for the input refresh in the next scan before reflecting the input to the
Input (#I, #D and LEX).
Input
Input refresh
Output refresh
I/O control
Sleep
(Display
processing
executed)
Input refresh
Output refresh
I/O control
Input delay
(maximum)
(#I, #D, LEX)
External
input