Mitsubishi MELSEC User Manual

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12.7 Special Register List
12
TROUBLESHOOTING
Table12.19 Special register
Number Name Meaning Explanation
Set by
(When set)
Corresponding
CPU
SD16
Error
individual
information
Error individual
information
10) CC-Link Safety information
11) Program abort information
*5 : The specified abort code is stored by the S.QSABORT
instruction.
12) File diagostics information
S (Error)
QS
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
SD27
Diagnostics
error CPU
identifier
CPU identifier
(CPU A/CPU B)
• The CPU identifier which the CPU issues diagnostics error
SD0 to SD26 is stored
0001H : CPU A
0002H : CPU B
S (Error)
SD50 Error reset
Error number
that performs
error reset
• Stores error number that performs error reset U
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.
S (Error)
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.
S (Error)
SD53
AC DOWN
detection
Number of
times
for AC DOWN
detection
• Every time the input voltage falls to or below 85% (AC power)
of the rating during calculation of the CPU module, the value
is incremented by 1 and stored in BIN code.
S (Error)
SD16
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Number
Meaning
Number of items for individual information
individual information 1
individual information 2
individual information 3
individual information 4
individual information 5
individual information 6
individual information 7
individual information 8
individual information 9
individual information 10
SD16
Number
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
Abort code 5
Meaning
(Empty)
SD16
Number
Meaning
SD17
SD18
SD19
SD20
SD21
SD22
SD23
SD24
SD25
SD26
3
MAIN.QPG
41 H (A) 40 H (M)
43
H (N) 49 H (I)
20
H ( SP )20 x ( SP )
20
H ( SP )20 H ( SP )
51
H (Q) 2E H (.)
47
H (G) 50 H (P)
b15 to b8 b7 to b0
Error
information
Drive No.
File name
(ASCII code: 8 characters)
Extension
2E
H (.)
(ASCII code: 3 characters)
Error information 2
Error information 3
(Example) File name =
b15 b1
b0
CPU module battery error
0
to

Mitsubishi MELSEC Specifications

General

Category	Programmable Logic Controller (PLC)
Manufacturer	Mitsubishi Electric
Series	MELSEC
Programming Languages	Ladder Diagram (LD), Function Block Diagram (FBD), Structured Text (ST), Instruction List (IL), Sequential Function Chart (SFC)
Communication Protocols	Ethernet, CC-Link, RS-232, RS-485, USB, Profibus, Modbus
Model Series	FX, Q, L, iQ-R, iQ-F
Input Voltage	100-240V AC, 24V DC (varies by model)
Memory Capacity	Varies widely depending on the CPU module and series. Ranges from kilobytes to megabytes.
I/O Points	16 to 8192 points (varies by model)
Communication Ports	Ethernet, RS-232, RS-485, USB (varies by model)
Programming Software	GX Works2, GX Works3, GX Developer
Operating Temperature	0°C to 55°C
Storage Temperature	-25°C to 75°C
Humidity	5% to 95% (non-condensing)
Vibration Resistance	10 to 57Hz, 0.075mm amplitude; 57 to 150Hz, 9.8m/s² acceleration
Shock Resistance	147m/s², 3 times in each direction (X, Y, Z)
Protection Class	IP20 (varies by model)
CPU Processing Speed	0.02μs to 0.1μs per instruction (varies by model)