Mitsubishi Electric Q26UD(E)HCPU User Manual page 497

(19)Redundant power supply module information
Number Name
OFF: No redundant
Power supply off
SM1780
detection flag
ON: Redundant power
OFF: No faulty
Power supply
SM1781 failure detection
flag ON: Faulty redundant
Momentary
power failure
SM1782
detection flag for
*1
power supply 1
OFF: No momentary
Momentary
ON: Momentary power
power failure
SM1783
detection flag for
*2
power supply 2
*1 The "power supply 1" indicates the redundant power supply module mounted on the POWER 1 slot of the redundant
base unit (Q38RB/Q68RB/Q65WRB).
*2 The "power supply 2" indicates the redundant power supply module mounted on the POWER 2 slot of the redundant
base unit (Q38RB/68RB/Q65WRB).
*3 Modules whose serial number (first five digits) is "07032" or later
In a multiple CPU system, the serial number (first five digits) of all the CPU modules must be "07032" or later.
*4 Modules whose serial number (first five digits) is "10042" or later
Meaning Explanation
• Turns on when one or more redundant
power supply modules with input power
power supply off are detected.
module with input • Turns on if any of SD1780 bits is on.
power OFF • Turns off if all bits of SD1780 are off.
detected • This relay turns off when the main base
unit is not the redundant main base unit
supply module (Q38RB).
with input power • When the multiple CPU system is
OFF detected configured, the flags are stored only to the
CPU No.1.
• Turns on when one or more faulty
redundant power supply modules are
detected.
redundant power • Turns on if any of SD1781 bits is on.
supply module • Turns off if all bits of SD1781 are off.
detected • This relay turns off when the main base
unit is not the redundant main base unit
power supply (Q38RB).
module detected • When the multiple CPU system is
configured, the flags are stored only to the
CPU No.1.
• Turns on when a momentary power failure
of the input power supply to the power
supply 1 or 2 is detected one or more
times. After turning on, this relay remains
on even if the power supply recovers from
the momentary power failure.
• Turns off the flags (SM1782 and SM1783)
of the power supply 1 and 2 when the
power failure
CPU module starts.
detected
• When the input power to one of the
redundant power supply modules turns
failure detected
off, the corresponding flag turns off.
• This relay turns off when the main base
unit is not the redundant main base unit
(Q38RB).
• When the multiple CPU system is
configured, the flags are stored only to the
CPU No.1.
APPENDICES
Corresponding
Set by Corresponding
ACPU
(When Set)
M9
S (Every
END New
processing)
S (Every
END New
processing)
S (Every
END New
processing)
A
CPU
*3
Qn(H)
*3
QnPH
QnPRH
*4
QnU
*3
Qn(H)
*3
QnPH
QnPRH
*4
QnU
*3
Qn(H)
*3
QnPH
QnPRH
*4
QnU
495