Mitsubishi Q00JCPU User Manual page 674

APPENDICES
Number Name Meaning
Power supply
Power supply off
SD1780 off detection
detection flag
flag
Power supply Power supply
SD1781 module failure module failure
detection flag detection flag
Momentary
power failure
Momentary power
detection
failure detection
SD1782
counter for
count for power
power supply
supply 1
*1
module1
Momentary
power failure
Momentary power
detection
failure detection
SD1783
counter for
count for power
power supply
supply 2
*1
module2
*1: The "power supply 1" indicates the redundant power supply module (Q64RP) mounted on the POWER 1 slot of the redundant base unit (Q38RB/68RB).
The "power supply 2" indicates the redundant power supply module (Q64RP) mounted on the POWER 2 slot of the redundant base unit (Q38RB/68RB).
App
Appendix 2 Special Register List
- 79
(18)Redundant power supply module information
SD1780 to SD1789 are valid only for a redundant power supply system.
The bits are all 0 for a singular power supply system.
TableApp.36 Special register
• Stores the status of the redundant power supply module (Q64RP) with
input power OFF in the following bit pattern.
• This register stores 0 when the main base unit is not the redundant main
base unit (Q38RB).
b15 to
0
SD1780
• Stores the failure detection status of the redundant power supply module
(Q64RP) in the following bit pattern. (The corresponding bit is cleared to
0 when the input power to the faulty redundant power supply module is
switched OFF after detection of the redundant power supply module
failure.)
• This register stores 0 when the main base unit is not the redundant main
base unit (Q38RB).
b15 to
0
SD1781
• Counts the number of times for momentary power failure of the power
supply 1/2.
• Watches and the status of the power supply 1/ 2 mounted on the
redundant main base unit (Q38RB) and counts the number of times for
momentary power failure.
• When the CPU module starts, the counter of the power supply 1/ 2 is
cleared to 0.
• If the input power to either redundant power supply module is switched
OFF, the counter corresponding to the redundant power supply module
with input power switched OFF is cleared to 0.
• The counter is incremented by 1 every time the momentary power failure
of the power supply 1/ 2 is detected.
(0 to 65535: When the count exceeds 65535, it starts with 0.)
• This register stores 0 when the main base unit is not the redundant main
base unit (Q38RB).
Explanation
Each bit
0: Input power ON status/ No
redundant power supply
b8 b7 to b0
module
0 1: Input power OFF status
Input power OFF detection status
of power supply 1
Input power OFF detection status
of power supply 2
Each bit
0: Redundant power supply
module failure not
b8 b7 to b0
detected/No redundant power
0 supply module
1: Redundant power supply
module failure detection
(Only redundant power
supply module can be
detected)
Failure detection status of
1
power supply 1
Failure detection status of
1
power supply 2
Corres-
ponding
Set by
ACPU
(When set)
D
S(Every END)
1
1
S(Every END)
S(Every END)
S(Every END)
Corresponding CPU
New
New
QnPRH
New
New