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App-154
TableApp.4.2 Special register
Number Name Meaning Explanation
Set by
(When Set)
Corres-
ponding
ACPU
D9
Corresponding
CPU
SD26
Error individual
information
Error individual
information
8) Reason(s) for system switching failure
*14: Details of reason(s) for system switching failure
S (Error) New
QnPRH
12) File diagnostic information
13) Parameter No./CPU No.
QnU
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Number Meaning
System switching prohibition
condition 14
(Empty)
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
12 : Online module change in
progress
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
circui
t fault, hardware fault)
SD17
SD18
SD19
SD20
File name
(ASCll: 8 characters)
SD21
SD22
SD23
SD24
SD16
drive No.(L)
SD25
SD26
Failuer information (H)
Failure information 2
(CRC value that is read)
EXtension *6 2EH(.)
(ASCll; 3 characters)
Failure information 3
(CRC value that is calculated)
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD16
SD25
SD26
Parameter No.*16
(Empty)
Number
Meaning
CPU No. (1 to 4)