Special Data Register (D8000 To D8511) - Mitsubishi Electric FX3G SERIES Programming Manual
Programmable controllers
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Also See for FX3G SERIES:
- User manual (532 pages) ,
- Hardware manual (8 pages) ,
- Quick start manual (2 pages)
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FX
/FX
/FX
Series Programmable Controllers
3G
3U
3UC
Programming Manual - Basic & Applied Instruction Edition
37.1.2
Special Data Register (D8000 to D8511)
Number and name
PLC Status
Default value is shown on the right (in 1ms steps)
D 8000
(Writes from system ROM at power ON)
Watchdog
Value overwritten by program is valid after END or WDT
timer
instruction execution.
2 4
[D]8001
PLC type and
system version
•
2...2K steps
•
4...4K steps
[D]8002
•
8...8K steps
Memory capacity
•
If 16K steps or more
"8" is written to D8002, and "16", "32" or "64" is written
to D8102.
Type of internal memory/RAM/EEPROM/EPROM cassette
or ON/OFF status of protect switch is stored
Present
value
00H
01H
[D]8003
Memory type
02H
0AH
10H
[D]8004
Error number M
8060 to 8068 (when M8004 is ON)
[D]8005
Battery voltage
Battery voltage present value (Example: 3.0V)
Default:
[D]8006
•
FX
2N
Low battery voltage
•
FX
3G
detection level
(Writes from system ROM at power ON)
*1.
The corresponding special data register D8101 is available only in FX
No corresponding device is available in FX
Content of register
→Refer to Subsection 37.2.2.
1 0 0
BCD converted value
Version 1.00
Indicated on the right
Type of memory
RAM memory cassette
EPROM memory cassette
EEPROM memory
cassette or flash memory
cassette
EEPROM memory
cassette or flash memory
cassette
Built-in memory in PLC
8 0 6 0
BCD converted value
BCD converted value
3 0
(in 0.1-V units)
and FX
PLCs: 3.0V (in 0.1-V units)
2NC
, FX
and FX
PLCs: 2.7V (in 0.1-V units)
3U
3UC
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
FX
FX
FX
3G
3U
3UC
200
200
200
26
24
24
8
8
8
Protect
switch
–
–
OFF
ON
–
3G
, FX
, FX
, FX
, and FX
1S
1N
2N
1NC
Applicable model
Correspond-
ing special
FX
FX
FX
FX
1S
1N
2N
1NC
device
–
200
200
200
200
*1
22
26
24
26
D8101
D8102
4
2
8
8
8
–
M8004
M8005
–
–
–
M8006
–
–
–
, FX
and FX
PLCs.
3U
3UC
PLCs.
2NC
31
FX
2NC
32
200
33
24
34
4
8
35
36
37
38
A
B
839
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