Mitsubishi Electric MELSEC iQ-R User Manual page 84

■Setting the condition to be monitored
• Set a condition to generate a hold trigger in 'CH1 Level trigger condition setting' (Un\G542).
Setting value
Level trigger (Rise) (1)
Level trigger (Fall) (2)
Level trigger (Rise and fall) (3)
Process alarm (upper limit
warning) (4)
Process alarm (lower limit
warning) (5)
Process alarm (upper limit
warning/lower limit warning) (6)
• Set a value to generate a hold trigger in 'CH1 Trigger setting value' (Un\G544). When Process alarm (upper limit warning)
(4), Process alarm (lower limit warning) (5), or Process alarm (upper limit warning/lower limit warning) (6) is set in 'CH1
Level trigger condition setting' (Un\G542), setting this area is not required.
Item
'CH1 Trigger setting value' (Un\G544)
1 FUNCTIONS
82
1.14 Normal Logging Function
Description
Y
(a)
Tx
Y: Stored value of a device to be monitored
t: Time
Tx: Trigger setting value
(a) A hold trigger is generated when the relation between the values
changes from "Stored value of a buffer memory area to be monitored 
Trigger setting value" to "Stored value of a buffer memory area to be
monitored > Trigger setting value".
(b) A hold trigger is generated when the relation between the values
changes from "Stored value of a buffer memory area to be monitored 
Trigger setting value" to "Stored value of a buffer memory area to be
monitored < Trigger setting value".
digit
(d)
P
uu
P
LL
(c)
digit: Digital operation value
t: Time
P : Process alarm upper upper limit value
UU
P : Process alarm lower lower limit value
LL
(c) A hold trigger is generated when the lower limit warning of the process
alarm is issued.
(d) A hold trigger is generated when the upper limit warning of the process
alarm is issued.
(b)
t
t
Setting range
-32768 to 32767
A hold trigger is generated under the condition
(a).
A hold trigger is generated under the condition
(b).
A hold trigger is generated under the condition
(a) or (b).
A hold trigger is generated under the condition
(d).
A hold trigger is generated under the condition
(c).
A hold trigger is generated under the condition
(c) or (d).