– 34 –
ALM
2
ALM
3
Alarm type Action diagram Alarm type Action diagram
00 No alarm
PV
11
High alarm
High alarm
(with hold)
Low alarm
(with hold)
Absolute
value
alarm
PV
ALn
ALn
55
High alarm
High alarm
(with hold)
Low alarm
(with hold)
Deviation
alarm
PV
SV
22
Low alarm
PV
ALn
ALn
PV
ALn
33
44
PV
66
High/Low
alarm
High/Low
alarm
(with hold)
High/Low
absolute alarm
High/Low
absolute alarm
High/Low
absolute alarm
High/Low
absolute alarm
(with hold)
High/Low
absolute alarm
(with hold)
High/Low
deviation alarm
High/Low
deviation alarm
High/Low
deviation alarm
High/Low
deviation alarm
(with hold)
High/Low
deviation alarm
(with hold)
High absolute
/Low deviation
alarm
High absolute
/Low deviation
alarm (with hold)
High absolute
/Low deviation
alarm
High absolute
/Low deviation
alarm
High absolute
/Low deviation
alarm (with hold)
High deviation
/Low absolute
alarm
High deviation
/Low absolute
alarm (with hold)
High deviation
/Low absolute
alarm
High deviation
/Low absolute
alarm
High deviation
/Low absolute
alarm (with hold)
High/Low
deviation alarm
(ALM1/2 independent
action)
Low alarm
PV
SV
ALn
77
PV
ALn
SV
ALn
11 11
Zone
alarm
Zone
alarm
PV
SV
ALn
PV
SV
ALn
99
PV
SV
ALn
10 10
PV
ALn
SV
ALn
ALn
12 –
PV
AL2 AL1
14 –
PV
SV ALn
AL2
AL1
15 –
PV
SVAL2
13 –
PV
SV
AL2 AL1
8
ALM
1
0
1
5
2
3
4
6
7
11
9
10
–
–
–
–
88
· Alarm code with dual set value· Standard alarm code
ALM
1
ALM
2
16 16
17 17
High
/Low
limit
alarm
21 21
18 18
19 19
20 20
22 22
23 23
27 27
25 25
26 26
28 28
30 30
31 31
29 29
PV
An-L An-H
PV
SV
An-H
An-L
PV
SV
An-H
An-L
PV
SV
An-L An-H
PV
An-L An-H
PV
SV
An-H
An-L
PV
SV
An-H
An-L
PV
SV
An-L An-H
PV
SV
An-L
PV
An-H
An-H
PV
SV
An-H
An-L
SV
An-L
PV
An-L An-H
PV
SV
An-L
PV
An-H
An-H
PV
SV
An-H
An-L
SV
An-L
PV
An-L An-H
24 24
ALM
3
16
17
21
18
19
20
22
23
27
25
26
28
30
31
29
24
· Timer code
ALM
1
ALM
2
Alarm type Action diagram
32 32
ON delay timer
33 33
OFF delay timer
Timer
34 34
ALM
3
32
33
34
ON/OFF
delay timer
DI
OUT
dLYn
DI
OUT
DI
OUT
dLYn
dLYn dLYn
What is alarm with hold?
The alarm is not turned ON immediately even when the process
value is in the alarm band. It turns ON when it goes out the alarm
band and enters again.
Point
Lower limit alarm
(with hold)
Power OFFPower ON
Power ON
off
off
on on
on
off
offoff
PV (process value)
Period where lower
limit alarm is output
Lower limit alarm
Parameter :
, ,
[Table 4] Alarm action type code
Note) · When alarm action type code is changed, alarm set value may also become different from previous
settings.
Please check these parameters, turn off the power once, and then re-start the controller, before start-
ing control.
·When selecting No.12 to 15, setting in ALM2, dLY2, and A2hy are effective, and output to the AL2
relay.
·ALn means alarm set value (AL1, AL2 or AL3).
·An-H means alarm set value (A1-H, A2-H or A3-H).
· An-L means alarm set value (A1-L, A2-L or A3-L).
·dLYn means alarm set value (dLY1, dLY2 or dLY3).
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