Mitsubishi Electric MELSEC iQ-R Series User Manual page 156

Latest address of alarm history
Common
Among Alarm history  (Un\G3760 to Un\G3919), a buffer memory address which stores the latest alarm code is stored.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Latest address of alarm history
Interrupt factor detection flag [n]
Normal
The detection status of the interrupt factor is stored.
Monitored value
0
1
When an interrupt factor occurs, an interrupt request is sent to the CPU module at the same time as when 'Interrupt factor
detection flag [n]' (Un\G4 to Un\G19) is turned to Interrupt factor (1).
"n" indicates an interrupt setting number. (n = 1 to 16)
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Interrupt factor detection flag
[n]
Warning output upper flag
Normal
The upper limit warning can be checked for each channel.
b15 b14 b13 b12 b11 b10 b9
0 0 0 0 0
(1) 0: Normal, 1: Warning alarm ON
(2) b4 to b15 are fixed to 0.
■Buffer memory address
The following shows the buffer memory address of this area.
Buffer memory name
Warning output upper flag
APPX
154
Appendix 3 Buffer Memory Areas
Wave
1 2 3 4
4 5 6 7
Wave
b8 b7 b6 b5 b4
0 0 0 0 0 0 0
(2)
CH1 CH2
3
Synchronization
Description
No interrupt factor
Interrupt factor
5 6 7 8
8 9 10 11
Synchronization
b3 b2 b1 b0
CH4 CH3 CH2 CH1
(1)
CH1 CH2
36
CH3
9 10 11 12 13
12 13 14 15 16
CH3
CH4
14 15 16
17 18 19
CH4