APPX
Appendix 3 Buffer Memory
115
A
Event time stamp data for refresh
Out of data stored in 'Event time stamp data' (Un\G4608 to Un\G5375), up to the eight events are stored in this area.
This buffer memory area is used for reading event time stamp data to the CPU module using function blocks (FB).
To use function blocks (FB), set "Target" to "Module Label" in "Refresh settings".
Ex.
For Event time stamp data 1 for refresh
*1 The value stored when a fall of the signal is detected on I/O terminal 1 at 12:34:56.789 on Friday, May 27, 2016.
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Buffer memory address
The following table shows the buffer memory address of this area.
Event time stamp number of read completion
The number of event time stamp that has been read to the CPU module is stored.
■
Buffer memory address
The following table shows the buffer memory address of this area.
Event time stamp data
When an event has occurred, data of up to 128 events are stored in this area.
The data to be stored in this area has the same structure and contents of data stored in 'Event time stamp data for refresh'
(Un\G4356 to Un\G4403).
■
Buffer memory address
The following table shows the buffer memory address of this area.
Item
Description
Example
First/Last two digits of the year
The time of an event occurrence is stored in the BCD code.
2016H
Month/Day
527H
Hour/Minute
1234H
Second
56H
Day of the week
The following values are stored in the BCD code for each day of the week.
Sunday: 0, Monday: 1, Tuesday: 2, Wednesday: 3
Thursday: 4, Friday: 5, Saturday: 6
5H
Millisecond (upper)
The time of an event occurrence is stored in the BCD code.
7H
Millisecond (lower)
89H
Event type
The type of the event that has occurred is stored.
• Rise of signal: 0H
• Fall of signal: 1H
1H
I/O terminal
The I/O terminal number where an event has occurred is stored.
1H
Buffer memory name
Data 1 to Data 8
Event time stamp data for refresh
4356 to 4403
Buffer memory name
X0 to XF
Event time stamp number of read completion
4416
Buffer memory name
Data 1 to Data 128
Event time stamp data
4608 to 5375
b15
b8 b7
b0
First two digits of the year
Last two digits of the year
Month
Day
Hour
Minute
Second
Day of the week
Millisecond (higher-order digits)
Millisecond (lower-order digits)
Un\G4359
Un\G4358
Un\G4357
Un\G4356
Un\G4360
Un\G4361
to
to
Event type
I/O terminal
Содержание MELSEC iQ-RX40NC6B
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