Appendix C-2 Special Data Register (D8000 To D8511) - Mitsubishi FX3UC SERIES User Manual

FX Series Programmable Controllers
3UC
User's Manual - Hardware Edition

Appendix C-2 Special Data Register (D8000 to D8511)

Number and
Content of register
name
PLC Status
Default value is shown on the right
(in 1ms steps)
(Writes from system ROM at power
D 8000
ON)
Watchdog timer
Value overwritten by program is
valid after END or WDT instruction
execution.
2 4
[D]8001
PLC type and
system version
FX
Series
• 2...2K steps
• 4...4K steps
[D]8002 • 8...8K steps
Memory capacity • If 16K steps or more
"K8" is written to D8002 and "16"
or "64" is written to D8102.
Type of cassette or ON/OFF status
[D]8003
of memory
Memory type
*1
stored.
8 0 6 0
[D]8004
Error number M
8060 to 8068
(when M8004 is ON)
[D]8005
Battery voltage
Battery voltage present value
(Example: 3.0V)
[D]8006
Default: 2.7V (in units of 0.1V)
Low battery
(Writes from system ROM at power
voltage detection
ON)
level
[D]8007 Operation frequency of M8007 is
Momentary power stored.
failure count Cleared at power-off.
D 8008
Power failure Default: 5 ms
detection
Minimum input device number of
[D]8009
extension power supply units and
24V DC failed
extension power units in which 24V
device
DC has failed.
*1. D8003 becomes the under mentioned content.
Present value Type of memory
02H Flash memory cassette
0AH Flash memory cassette
10H Built-in memory in PLC
432
BCD converted
1 0 0
value
Version 1.00
, FX , FX , FX
3U 3UC 2N 2NC
protect switch is
BCD converted
value
BCD converted
3 0
value
(in units of 0.1V)
Protect switch
OFF
ON
–
C Operation of Special Devices (M8000 -, D8000 -)
Correspond-
Number and
ing special
name
device
Clock
[D]8010
Present scan
*2
time
–
[D]8011
Minimum scan
*2
time
[D]8012
Maximum scan
time *2
D8101
D 8013
Second data
D 8014
Minute data
D 8015
D8102 Hour data
D 8016
Day data
D 8017
Month data
–
D 8018
Year data
D 8019
Day-of-the-week
M8004
data
*2. Indicated value includes waiting time of constant scan
operation (when M8039 is activated).
M8005
Input Filter
D 8020
Input filter
adjustment
M8006
[D]8021
[D]8022
[D]8023
M8007
[D]8024
[D]8025
[D]8026
M8008
[D]8027
Index Register Z0 and V0
M8009
[D]8028
[D]8029
*3. X000 to X007 in FX
*4. The values of Z1 to Z7 and V1 to V7 are stored in D8182 to
D8195.
C-2 Special Data Register (D8000 to D8511)
Content of register
Accumulated instruction-execution
time from 0 step
(in units of 0.1 ms)
Minimum value of scan time
(in units of 0.1 ms)
Maximum value of scan time
(in units of 0.1 ms)
0 to 59 seconds
(for real time clock)
0 to 59 minutes
(for real time clock)
0 to 23 hours
(for real time clock)
1 to 31 days
(for real time clock)
1 to 12 months
(for real time clock)
2 digits of year data (0 to 99)
(for real time clock)
0 (Sunday) to 6 (Saturday)
(for real time clock)
Input filter value of X000 to X017
(Default: 10 ms)
Not used
*4
Value of Z0 (Z) register
*4
Value of V0 (V) register
-16M .
3UC
Correspond-
ing special
device
–
–
–
–
–
–
–
–
–
–
*3
–
–
–
–
–
–
–
–
–
–