Mitsubishi Electric QJ81DL96 User Manual page 200

7
DATA LOGGING FUNCTION
(2) Compound conditions
7
- 15 7.3 Logging Types
7.3.3 Trigger conditions
For compound conditions, triggers occur by establishing multiple conditions.
The conditions which compose compound conditions are the same as the conditions
which can be specified with single conditions.
(a) OR combine
Triggers occur by establishing any of the set conditions.
Trigger
True
False
Condition 1
True
False
Condition 2
True
OR operation result False
(b) AND combine
Triggers occur by establishing all of the set conditions.
Trigger
True
False
Condition 1
True
False
Condition 2
True
False
AND operation result
(c) Number of times
The number of times the condition is established (established counts) is
compared with the specified counts and a trigger occurs.
The timing of the comparison of the established counts to the specified counts can
be selected from the options below.
• Number-of-times conditions to be noted when a terminal condition holds true.
• When a specified number of times is exceeded.
For details on counts, refer to the following section.
 Section 11.5.11 Trigger (compound condition)(3) Number of times
(d) Order
Monitors the order of multiple conditions being established, a trigger occurs when
the order is normal, when out of order, or when a timeout is detected.
For details on order, refer to the following section.
 Section 11.5.11 Trigger (compound condition)(4) Order
POINT
OR and AND combines cannot be combined for the trigger conditions.
Occurred Occurred
Occurred
Occurred
Occurred