App
- 79
Appendix 2 Special Register List
APPENDICES
(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.
*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).
TableApp.36 Special register
Number Name Meaning Explanation
Set by
(When set)
Corres-
ponding
ACPU
D
Corresponding CPU
SD1780
Power supply
off detection
flag
Power supply off
detection flag
• 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).
S(Every END) New
QnPRH
SD1781
Power supply
module failure
detection flag
Power supply
module failure
detection flag
• 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).
S(Every END) New
SD1782
Momentary
power failure
detection
counter for
power supply
module1
*1
Momentary power
failure detection
count for power
supply 1
• 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).
S(Every END) New
SD1783
Momentary
power failure
detection
counter for
power supply
module2
*1
Momentary power
failure detection
count for power
supply 2
S(Every END) New
b0b7b8b15
toto
00
Input power OFF detection status
of power supply 1
Each bit
0: Input power ON status/ No
redundant power supply
module
1: Input power OFF status
SD1780
Input power OFF detection status
of power supply 2
1
1
Failure detection status of
power supply 2
b0b7b8b15
toto
00
Failure detection status of
power supply 1
Each bit
0: Redundant power supply
module failure not
detected/No redundant power
supply module
1: Redundant power supply
module failure detection
(Only redundant power
supply module can be
detected)
SD1781
1
1
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