APPX
Appendix 3 Buffer Memory Areas
147
A
Latest address of alarm history
Among Alarm history (Un\G3760 to Un\G3999), 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.
Interrupt factor detection flag [n]
The detection status of the interrupt factor is stored.
When an interrupt factor occurs, an interrupt request is sent to the CPU module at the same time as '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.
Alert output flag (Process alarm upper limit)
The upper limit alarm of the process alarm can be checked for each channel.
■Buffer memory address
The following shows the buffer memory address of this area.
■Alert output flag status
• When the value is out of the range specified in the process alarm upper upper limit value, Alarm ON (1) is stored in 'Alert
output flag (Process alarm upper limit)' (Un\G36) corresponding to each channel.
• When an alert is detected in any channel where the A/D conversion and the alert output setting (Process alarm) are
enabled, 'Alert output signal' (X8) also turns on.
■Clearing Alert output flag
• When the digital operation value returns within the setting range, the flag is automatically cleared.
• When 'Operating condition setting request' (Y9) is turned on and off, the flag is cleared.
Buffer memory name CH
1
CH
2
CH
3
CH
4
CH
5
CH
6
CH
7
CH
8
CH
9
CH
10
CH
11
CH
12
CH
13
CH
14
CH
15
CH
16
Latest address of alarm history 3
Latest address of alarm history (in Q compatible
mode)
3751
Monitor value Description
0 No interrupt factor
1 Interrupt factor
Buffer memory name 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
Interrupt factor detection flag
[n]
4 5 6 7 8 9 10111213141516171819
Interrupt factor detection flag
[n] (in Q compatible mode)
4000 4001 4002 4003 4004 4005 4006 4007 4008 4009 4010 4011 4012 4013 4014 4015
• 0: Normal, 1: Alarm ON
• b8 to b15 of the R60AD8-G are fixed to 0.
Buffer memory name CH
1
CH
2
CH
3
CH
4
CH
5
CH
6
CH
7
CH
8
CH
9
CH
10
CH
11
CH
12
CH
13
CH
14
CH
15
CH
16
Alert output flag (Process alarm upper limit) 36
CH16 CH15 CH14 CH13 CH12 CH11 CH10 CH9 CH1CH2CH3CH4CH5CH6CH7CH8
b15 b14 b13 b12 b11 b10 b9 b8 b7 b6 b5 b0b1b2b3b4
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