Mitsubishi MELSEC Q Series Programming Manual page 1212

Number Name
Error individual Error individual
SD26
information information
Error number
SD50 Error reset that performs
error reset
Bit pattern
indicating
Battery low
SD51 where battery
latch
voltage drop
occurred
App-204
Meaning
9) Failure information
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
12) File diagnostic information
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
13) Parameter No./CPU No.
Number
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
*16 For details of the parameter No., refer to the following:
User's Manual (Function Explanation, Program
Fundamentals) for the CPU module used
Stores error number that performs error reset
• If a battery voltage drops, the corresponding bit stores "1"
(turns on).
• This register remains on even after the battery voltage
returns to normal.
b15 to
0
*1 These bits are not available for the Basic model QCPU and
LCPU.
•If an alarm occurs, data can be held within the time specified
for battery low.
•The error indicates full discharge of a battery.
Explanation
Meaning
Failure information 1
Failure information 2
Failure information 3
Failure information 4
Failure information 5
Failure information 6
Failure information 7
Failure information 8
Failure information 9
Failure information 10
Failure information 11
Failure information1 (H) drive No.(L)
File name
(ASCll: 8 characters)
EXtension *6 2EH(.)
(ASCll; 3 characters)
Failure information 2
(CRC value that is read)
Failure information 3
(CRC value that is calculated)
Meaning
Parameter No.*16
CPU No. (1 to 4)
(Empty)
b3 b2 b1 b0
Battery error for
CPU module
alarm
error
Corres-
ponding
Set by
ACPU
(When Set)
D9
S
(Error)
U
New
S
(Error)
1
Corres-
ponding
CPU
LCPU
QnU
LCPU
QnU
QCPU
LCPU
QCPU
LCPU