Mitsubishi Q02CPU

APPENDICES
Appendix 2 Special Register List
App
- 36
9
Device Explanation
10
CPU Module Processing Time
11
Procedure for Writing Program to CPU Module
Appendices
Index
TableApp.18 Special register
Number Name Meaning Explanation
Set by
(When set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD26
Error common
information
Error common
information
8) Reason(s) for system switching failure
*14: Details of reason(s) for system switching failure
S (Error) New QnPRH
SD50 Error reset
Error number that
performs error
rese
• Stores error number that performs error reset U New
Rem
SD51
Battery low
latch
Bit pattern
indicating where
battery voltage
drop occurred
• All corresponding bits go 1(ON) when battery voltage drops.
• Subsequently, these remain 1(ON) even after battery voltage has been
returned to normal.
• 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.
S (Error) New
SD52 Battery low
Bit pattern
indicating where
battery voltage
drop occurred
• 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.
S (Error) New
SD53
AC/DC DOWN
detection
Number of times
for AC/DC DOWN
detection
• 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.
S (Error) D9005
Rem
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Number Meaning
System switching prohibition
condition 14
(Vacancy)
10 : Error detected by network
module of standby system
7 : Operation differs between two
systems (in backup mode only)
3 : Hardware failure, power OFF,
reset or watchdog timer error
occurring in control system
9 : Online program change
11 : System switching being executed
8 : During memory copy from control
system to standby system
6 : Standby system is in stop error
(except watchdog timer error)
4 : Preparing for tracking
5 : Time limit exceeded
2 : Hardware failure, power OFF,
reset or watchdog timer error
occurring in standby system
0 : Normal switching completion
(default)
1 : Tracking cable fault (cable
removal, cable fault, internal
circuit fault, hardware fault)
0
b4
b3 b2 b1 b0
CPU error
: This does not apply to Basic model QCPU.
Memory card A alarm
Memory card A error
Memory card B alarm
Memory card B error
b15 b5
to