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FX3G/FX3U/FX3UC Series Programmable Controllers
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
31
FNC275-FNC279
Data
Transfer 3
32
FNC280-FNC289
High Speed
Processing 2
33
FNC290-FNC299
Extension File
Register
34
FNC300-FNC305
FX
3U
-CF-ADP
35
SFC•STL
Programming
36
Interrupt
Function
37
Special Device
38
Error Code
A
Version Up
Information
B
Execution Times
Clock
[M]8010 Not used
– – – – –––––
[M]8011
10 ms clock pulse
ON and OFF in 10 ms cycles (ON: 5 ms, OFF: 5 ms)
→Refer to Subsection 37.2.6.
3 3 3 – 33333
[M]8012
100 ms clock pulse
ON and OFF in 100 ms cycles (ON: 50 ms, OFF: 50 ms)
→Refer to Subsection 37.2.6.
3 3 3 – 33333
[M]8013
1 sec clock pulse
ON and OFF in 1 sec
cycles
(ON: 500 ms, OFF: 500 ms)
→Refer to Subsection 37.2.6.
3 3 3 – 33333
[M]8014
1 min clock pulse
ON and OFF in 1 min
cycles
(ON: 30 sec, OFF: 30 sec)
→Refer to Subsection 37.2.6.
3 3 3 – 33333
M 8015
Clock stop and preset
For real time clock
→Refer to Subsection 37.2.7.
3 3 3 – 3333
3
*3
M 8016
Time read display is stopped
For real time clock
→Refer to Subsection 37.2.7.
3 3 3 – 3333
3
*3
M 8017
±30 seconds correction
For real time clock
→Refer to Subsection 37.2.7.
3 3 3 – 3333
3
*3
[M]8018
Installation detection (Always ON)
For real time clock
→Refer to Subsection 37.2.7.
3 3 3 –
3 (Always ON)
*3
M 8019
Real time clock (RTC) error
For real time clock
→Refer to Subsection 37.2.7.
3 3 3 – 3333
3
*3
Flag
[M]8020
Zero
ON when the result of addition/subtraction is 0.
→Refer to Subsection 6.5.2 for usage.
3 3 3 – 33333
[M]8021
Borrow
ON when the result of subtraction is less than the min.
negative number.
→Refer to Subsection 6.5.2 for usage.
3 3 3 – 33333
M 8022
Carry
ON when 'carry' occurs in result of addition or when an
overflow occurs in result of shift operation.
→Refer to Subsection 6.5.2 for usage.
3 3 3 – 33333
[M]8023 Not used
– – – – –––––
M 8024
*1
BMOV direction specification
(FNC 15)
3 3 3 ––333 3
M 8025
*2
HSC mode
(FNC 53 to 55)
– 3 3 –––3 – 3
M 8026
*2
RAMP mode
(FNC 67)
– 3 3 –––3 – 3
M 8027
*2
PR mode
(FNC 77)
– 3 3 –––3 – 3
M 8028
100 ms/10 ms timer changeover
– – ––3 ––– –
Interrupt permission during FROM/TO (FNC 78 and 79)
instruction execution
3 3 3 –––3 – 3
[M]8029
Instruction execution
complete
ON when operation such as DSW (FNC 72) is
completed.
→Refer to Subsection 6.5.2 for usage.
3 3 3 – 33333
*1. The operation varies according to PLC:
- Not cleared in an FX
1N, FX1NC, FX2N, or FX2NC PLC.
- Cleared in an FX
3G, FX3U, or FX3UC PLC when PLC switches from RUN to STOP.
*2. The operation varies according to PLC:
- Not cleared in an FX
2N or FX2NC PLC.
- Cleared in an FX
3U or FX3UC when PLC switches from RUN to STOP.
*3. The FX
2NC PLC requires the optional memory board (with the real time clock).
Number and name Operation and function
Applicable model
FX
3G FX3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
2N
FX
1NC
FX
2NC