Omron NT21 User Manual

2-11SectionAlarm List, Alarm History
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2-11 Alarm List, Alarm History
Function Outline
Alarm List
The PT can monitor the status of bits at the connected host designated in bit
memory table entries and, when the status of a particular bit changes to 1 (ON),
display the corresponding message (from a character string memory table
entry) or image/library data. The element used to execute this function is called
an alarm list.
Character string
memory table entry 32
Image/library
data 113C
Character string memory table entry 50
Image/library data 1002
Character string memory table entry 32
Image/library data 113C
Character string memory table entry 54
Image/library data 1125
Bit
No. 13
← 1 (ON)
No. 14
No. 15
0 A000000
1 L001003
0 D010015
Host
Message set for bit memory table entry 14
(character string memory table entry 32)
When the message being displayed is pressed, the image/library
data (113C) set for bit memory table entry 14 is displayed.
Alarm History
The PT can continually monitor bits at the host designated in bit memory table
entries, record the time when their status changes to 1 (ON), and the number of
times they come ON, and display this information together with the correspond-
ing message (from a character string memory table entry) for the bit. The ele-
ment used to execute this function is called an alarm history.
The alarm history record data is backed up by the built-in battery of the PT and is
therefore retained even when the power to the PT is turned OFF or the PT is re-
set. (An optional Battery is required for the NT21.)
Image/library
data 102B
Character string memory table entry 11
Image/library data 005F
Character string memory table entry 12
Image/library data 102A
Character string memory table entry 13
Image/library data 102B
No. 22
Bit memory table 24
97/12/04 11:19:20
Bit memory table 23
97/12/04 11:25:12
No. 23
No. 24
Message set for bit memory table entry 24
(character string memory table entry 13)
Character string
memory table entry 13
Character string
memory table entry 12
When the message being displayed is pressed, the image/library
data set for bit memory table entry 13 (102B) is displayed.
Record data
Reference: If the remaining capacity of the battery is insufficient, the alarm history data is all
cleared when the power to the PT is turned OFF or the PT is reset.
When low battery voltage is detected, replace the battery immediately. Refer to
section 7 of the Setup Manual for details on replacing the battery.

Omron NT21 Specifications

General

Brand	Omron
Model	NT21
Category	Touch terminals
Language	English