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<4. Configuration>
29
IM 01E21A02-03EN
4.6.2 Alert Object
This product can report the following alarms or events.
Analog Alerts (Generated when a process value exceeds the threshold)
AI Block: Hi-Hi Alarm, Hi Alarm, Low Alarm, Low-Low Alarm
Discrete Alerts (Generated when an abnormal condition is detected)
Resource Block: Block Alarm, Write Alarm
Transducer block: Block alarm
AI, DI, IT, AR, PID and MAO Blocks: Block Alarm
Update Alerts (Generated when an important (restorable) parameter is updated)
Resource Block: Update Event
Transducer Block: Update Event
AI, DI, IT, AR, PID and MAO block: Update Event
Field diagnosis alert (Generated when an error is found in the device status.)
Resource block:
Check alarm, error detection alarm, maintenance alarm and out-of-specification alarm
The alert consists of elements listed in Table 4.7.
Table 4.7
Alert Object
Subindex
Parameter Name
Description
Analog
Alert
Discrete
Alert
Update
Alert
Field
Diagnosis
Alert
1
1
1
1
Block Index
Index of block from which alert is
generated
2
2
2
2
Alert Key
ALERT_KEY copied from the
block
3
3
3
3
Standard Type
Type of the alert
4
4
4
4
Mfr Type
Alert Name identified with
manufacturer specific DD
5
5
5
5
Message Type
Reason of alert notification
6
6
6
6
Priority
Priority of the alarm.
By sending with priority
information being added in
communication frame when the
alert is issued, for example, the
alert is used to apply a filter to
ignore values below the specified
priority on the host side.
7
7
7
7
Time Stamp
Time when this alert is first
detected
8
8
8
Subcode
Subcode indicating cause of alert
9
9
9
Value
Value of referenced data
10
10
10
Relative Index
Relative index of referenced data
8
Static Revision
Value of the static revision (ST_
REV) of the block
11
11
9
Unit Index
Unit code of referenced data
11
Source Block
Index
Relative index of block causing
alarm generation