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System Configuration Section 1-3
Alarm List/History The alarm list/history function displays messages in list form, or graphics
(image/library data), in accordance with changes in bit memory table sta-
tuses.
For the alarm list, a series of bit memory tables are monitored, and messages
(contents of character string memory tables) set for bit memory tables that
come ON are displayed.
For the alarm history, bit memory tables for which the history property is set
are continually monitored, and the time when they come ON and number of
times they come ON are recorded and displayed together with the message
(character string) set for the bit memory table.
The NT631/NT631C allows selection of the display order as the newest
record first or the oldest record first by memory switch setting.
The alarm list function is used to determine which bits are ON at the present
time. The alarm history function is used to determine the times at which
alarms occurred in the past and how many times alarms have occurred
Alarm List
Alarm History
Recipe You can set several words of numeric data at the PT in tabular format, and
write it to the host. You can also read several words of numeric data from the
host and display it on the PT screen.
1-3 System Configuration
This section shows the configuration of a system that uses an NT631/
NT631C. For details on product models, refer to Appendix J Model List
(page 281).
0
1
0
Bit
A000000
L001003
D010015
1(ON)
No.13
No.14
No.15
Character string table No. 32
HOST
Message (character string table No. 32)
set for bit memory table No. 14
Image/library
data 113C
When the message displayed is pressed, the image/library
data (113C) set for bit memory table No. 14 is displayed.
Character string table No. 50
Image/library data 1002
Character string table No. 32
Image/library data 113C
Character string table No. 54
Image/library data 1125
No. 22
No. 23
No. 24
Recorded data
Character string table No. 13
Character string table No. 12
Message (character string table No. 13)
set for bit memory table No. 24
When the upper message displayed is pressed, the image/library
data (102B) set for bit memory table No. 13 is displayed.
Image/library
data 102B
Character string table No. 11
Image/library data 005F
Character string table No. 12
Image/library data 102A
Character string table No. 13
Image/library data 102B
Bit memory table No. 24
97/12/04 11:19:20
Bit memory table No. 23
97/12/04 11:25:12