Mitsubishi FX2-16E series, User Manual

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FX
3U
Series Programmable Controllers
User’s Manual - Hardware Edition
481
A Operation of Special Devices (M8000 -, D8000 -)
A-2 Special Data Register (D8000 to D8511)
21
Memor
y
Cas
sette
22
B
attery
A
S
pe
cia
l D
ev
ice
s
(M
8000-
,D800
0-)
B
Instruction Li
st
C
C
haracte
r-c
ode
D
D
isc
onti
nued
mod
els
E
Pr
ec
auti
ons
for
battery transport
ati
on
F
Handli
ng of
batteries i
n EU
member st
ates
Appendix A-2 Special Data Register (D8000 to D8511)
Number and
name
Content of register
Correspond-
ing special
device
PLC Status
D 8000
Watchdog timer
Default value is 200ms
(in 1ms steps)
(Writes from system ROM at power
ON)
Value overwritten by program is
valid after the END or WDT
instruction execution.
–
[D]8001
PLC type and
system version
D8101
[D]8002
Memory capacity
• 2...2K steps
• 4...4K steps
• 8...8K steps
• If 16K steps or more
"8" is written to D8002 and "16"
or "64" is written to D8102.
D8102
[D]8003
Memory type
Type of cassette or ON/OFF status
of memory protect switch is
stored.
*1
–
[D]8004
Error number M
M8004
[D]8005
Battery voltage
M8005
[D]8006
Low battery
voltage detection
level
Default:2.7V (in 0.1V units)
(Writes from system ROM at power
ON)
M8006
[D]8007
Momentary power
failure count Operation frequency of M8007 is
stored.
Cleared at power OFF.
M8007
D 8008
Power failure
detection Default:
10 ms (AC power supply type)
5 ms (DC power supply type)
M8008
[D]8009
24V DC failed
device Lowest input device number of the
I/O extension units in which 24V
DC power has failed
M8009
*1. D8003 becomes the undermentioned content.
BCD converted
value
2 4 2 2 0
FX
3U
, FX
3UC
, FX
2N
, FX
2NC
Series
Version 2.20
BCD converted
value
8 0 6 0
8060 to 8068
(when M8004 is ON)
BCD converted
value
(in 0.1V units)
3 0
Battery voltage present value
(Example: 3.0V)
Present value Type of memory Protect switch
02H Flash memory cassette OFF
0AH Flash memory cassette ON
10H Built-in memory in PLC –
Clock
[D]8010
Present scan time
*2
Accumulated instruction-execution
time from step 0
(in 0.1ms units)
–
[D]8011
Minimum scan
time
*2
Minimum value of scan time
(in 0.1ms units)
–
[D]8012
Maximum scan
time
*2
Maximum value of scan time
(in 0.1ms units)
–
D 8013
Second data 0 to 59 seconds
(for real time clock)
–
D 8014
Minute data 0 to 59 minutes
(for real time clock)
–
D 8015
Hour data 0 to 23 hours
(for real time clock)
–
D 8016
Day data 1 to 31 days
(for real time clock)
–
D 8017
Month data 1 to 12 months
(for real time clock)
–
D 8018
Year data 2 digits of year data (0 to 99)
(for real time clock)
–
D 8019
Day-of-the-week
data
0 (Sunday) to 6 (Saturday)
(for real time clock)
–
*2. Indicated value includes waiting time of constant scan
operations (when M8039 is activated).
Input Filter
D 8020
Input filter
adjustment
Input filter value of X000 to X017
*3
(Default: 10 ms)
–
[D]8021
Not used
–
[D]8022 –
[D]8023 –
[D]8024 –
[D]8025 –
[D]8026 –
[D]8027 –
Index Register Z0 and V0
[D]8028
Value of Z0 (Z) register
*4
–
[D]8029
Value of V0 (V) register
*4
–
*3. X000 to X007 in FX
3U
-16M .
*4. The values of Z1 to Z7 and V1 to V7 are stored in D8182
to D8195.
Number and
name
Content of register
Correspond-
ing special
device