Omron Programmable Terminals NT31 NT31C - Manual (Page 27)

Section
15
The alarm list/history function displays messages in list form, or graphics
(image/library data), in accordance with changes in bit memory table statuses.
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 (charac-
ter string) set for the bit memory table.
The NT31/NT31C 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
0
1
0
Bit
A000000
L001003
D010015
1(ON)
No.13
No.14
No.15
Message (character string table No. 32)
set for bit memory table No. 14
Character string table No. 32 Character string table No. 50
Image/library data 1002 HOST
Character string table No. 32
Image/library data 113C
Character string table No. 54
Image/library data 1125 Image/library
data 113C
When the message displayed is pressed, the image/library
data (113C) set for bit memory table No. 14 is displayed.
Alarm History
No. 22
No. 23
No. 24
Recorded data
Message (character string table No. 13)
set for bit memory table No. 24
Character string table No. 13
Character string table No. 12
Character string table No. 11
Image/library data 005F Bit memory table No. 24
97/12/04 11:19:20
Character string table No. 12
Image/library data 102A Bit memory table No. 23
97/12/04 11:25:12
Image/library
data 102B
Character string table No. 13
Image/library data 102B
When the upper message displayed is pressed, the image/library
data (102B) set for bit memory table No. 13 is displayed.
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.
Alarm List/History
Recipe