Mitsubishi Q00JCPU User Manual page 631

APPENDICES
Number Name Meaning
Error common Error common
SD26
information information
Error number that
SD50 Error reset performs error
rese
Bit pattern
Battery low indicating where
SD51
latch battery voltage
drop occurred
Bit pattern
indicating where
SD52 Battery low
battery voltage
drop occurred
Number of times
AC/DC DOWN
SD53 for AC/DC DOWN
detection
detection
TableApp.18 Special register
Explanation
8) Reason(s) for system switching failure
Number Meaning
System switching prohibition
SD16
condition 14
SD17
SD18
SD19
SD20
SD21
(Vacancy)
SD22
SD23
SD24
SD25
SD26
*14: Details of reason(s) for system switching failure
0 : Normal switching completion
(default)
1 : Tracking cable fault (cable
removal, cable fault, internal
circuit fault, hardware fault)
2 : Hardware failure, power OFF,
reset or watchdog timer error
occurring in standby system
3 : Hardware failure, power OFF,
reset or watchdog timer error
occurring in control system
4 : Preparing for tracking
5 : Time limit exceeded
6 : Standby system is in stop error
(except watchdog timer error)
7 : Operation differs between two
systems (in backup mode only)
8 : During memory copy from control
system to standby system
9 : Online program change
10 : Error detected by network
module of standby system
11 : System switching being executed
• Stores error number that performs error reset
• All corresponding bits go 1(ON) when battery voltage drops.
• Subsequently, these remain 1(ON) even after battery voltage has been
returned to normal.
b15 to b5 b4 b3 b2 b1 b0
0
: This does not apply to Basic model QCPU.
• In the alarm, data can be held within the time specified for battery low.
• The error indicates the complete discharge of the battery.
• When the High Performance model QCPU, Process CPU or Redundant
CPU is used, the memory card B is standard and therefore the
corresponding bits always remain OFF.
• Same configuration as SD51 above
• Turns to 0 (OFF) when the battery voltage returns to normal thereafter.
• When the High Performance model QCPU, Process CPU or Redundant
CPU is used, the memory card B is standard and therefore the
corresponding bits always remain OFF.
• Every time the input voltage falls to or below 85% (AC power)/65% (DC
power) of the rating during calculation of the CPU module, the value is
incremented by 1 and stored in BIN code.
Set by
(When set)
S (Error)
U
CPU error
Memory card A alarm
Memory card A error
S (Error)
Memory card B alarm
Memory card B error
S (Error)
S (Error)
Appendix 2 Special Register List
Corres-
ponding
Corresponding
ACPU
CPU
D9
New QnPRH
New
Rem
New
New
D9005
Rem
App
- 36
9
10
11