Mitsubishi Q00JCPU User Manual page 668

APPENDICES
Number Name Meaning
Operation mode
Hot start switch
SD1512 during CPU
power out time
module start up
4 LED states
Redundant • BACKUP
SD1585 system LED • CONTROL
status • SYSTEM A
• SYSTEM B
Reason(s) for
Reason(s) for
system switching
SD1588 system
that occurred in
switching
host station
*1: The information of the host CPU module is stored.
App
Appendix 2 Special Register List
- 73
(15)For redundant systems (Host system CPU information
SD1510 to SD1599 are only valid for redundant systems.
They are all set to 0 for standalone systems.
TableApp.33 Special register
• Shows the power out time (S) during the automatic switch from hot start
to initial start in the operation mode when the CPU module is started up.
The LED status for BACKUP, CONTROL, SYSTEM A, SYSTEM B is
stored in the following format:
b15 to b10b9 b8 b7
0
SYSTEM B
0: Off
1: On
2: Flicker
SYSTEM A
0: Off
1: On
2: Flicker
Stores the reason(s) for system switching on the host system.
The following values are stored corresponding to the methods for system
switching:
Initialized to 0 when power is switched off and then on or the RESET switch
is set to the RESET position and then to the neutral position.
0: Initial value (control system has not been switched)
1: Power off, Reset, H/W failure, WDT error,
2: CPU stop error (except WDT)
3: System switching request from intelligent module
16: System switching dedicated instruction
17: System switching request from GX Developer
Explanation
b6 b5 b4 b3 b2 to b0
0
BACKUP
0: Off
1: On (red) 5: On (orange-yellow)
2: Flicker(red) 6: Flicker
(orange-yellow)
3: On(green)
4: Flicker(green)
CONTROL
0: Off
1: On
*1
)
Corres-
ponding
Set by
Corresponding CPU
ACPU
(When set)
D9
S (Initial) New
S (status
New
change)
S (when
condition occurs)
Q4AR
QnPRH