Mitsubishi Electric Q26UD(E)HCPU User Manual page 587

(23)Redundant power supply module information
The special register (SD1780 to SD1789) is valid only for redundant power supply systems. All bits are set to "0"
for stand-alone power supply systems.
Number Name Meaning
Power supply Power supply
SD1780 off detection off detection
status status
Power supply Power supply
failure failure
SD1781
detection detection
status status
Explanation
• This register stores the status of the redundant power
supply module (Q63RP, Q64RPN, or Q64RP) with input
power off, in the following bit pattern.
Input power OFF Input power OFF
detection status of detection status of
1
1
power supply 2 power supply 1
b15 to b9 b8 b7 to b1
SD1780 to to
• When the main base unit is not the redundant power main
base unit (Q38RB), "0" is stored.
• In a multiple CPU system, the status is stored only to CPU
module No.1.
• This register stores the failure detection status of the
redundant power supply module (Q63RP, Q64RPN, or
Q64RP) in the following bit pattern. (After a failure is
detected, the bit corresponding to the failed module is set
to "0" upon powering off the module.)
Failure detection Failure detection
status of power status of power
1
supply 2 supply 1
b15 b9 b8 b7
to to
SD1781 to to
• When the main base unit is not the redundant power main
base unit (Q38RB), "0" is stored.
• In a multiple CPU system, the status is stored only to CPU
module No.1.
Set by
(When Set)
Each bit
0: Input power ON status/
No redundant power
b0
supply module
1: Input power OFF status
S (Every
Main base unit
1st extension base
END
:
processing)
7th extension base
Main base unit
1st extension base
:
7th extension base
Each bit
0: Redundant power
supply module failure
1
not detected/
No redundant power
b1 b0
supply module
1: Redundant power
S (Every
supply module failure
detected (Detectable
END
for redundant power
supply module only)
processing)
Main base unit
1st extension base
:
7th extension base
Main base unit
1st extension base
:
7th extension base
APPENDICES
Corresponding
Corresponding
ACPU
CPU
D9
*3
Qn(H)
*3
QnPH
New
QnPRH
*4
QnU
*3
Qn(H)
*3
QnPH
New
QnPRH
*4
QnU
585
A