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FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
37 Operation of Special Devices (M8000 -, D8000 -)
37.1 Special Device List (M8000 -, D8000 -)
31
FNC277-FNC279
Data
Transfer 3
32
FNC280-FNC289
High-Speed
Processing 2
33
FNC290-FNC299
Extension File
Register Control
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
Pulse width/Pulse period measurement [FX3G/FX3GC] (Refer to Section 36.8 for details.)
D 8074
*1
Lower
[X000]
Ring counter value for rising edge
(1/6 µs unit)
–
*2
– –
M8076
M8080
–––––
D 8075
*1
Upper – – –––––
D 8076
*1
Lower
[X000]
Ring counter value for falling edge
(1/6 µs unit)
–
*2
– – –––––
D 8077
*1
Upper – – –––––
D 8078
*1
Lower
[X000]
Pulse width/Pulse period
(10 µs unit)
–
*2
– – –––––
D 8079
*1
Upper – – –––––
D 8080
*1
Lower
[X001]
Ring counter value for rising edge
(1/6 µs unit)
–
*2
– –
M8077
M8081
–––––
D 8081
*1
Upper – – –––––
D 8082
*1
Lower
[X001]
Ring counter value for falling edge
(1/6 µs unit)
–
*2
– – –––––
D 8083
*1
Upper – – –––––
D 8084
*1
Lower
[X001]
Pulse width/Pulse period
(10 µs unit)
–
*2
– – –––––
D 8085
*1
Upper – – –––––
D 8086
*1
Lower
[X003]
Ring counter value for rising edge
(1/6 µs unit)
–
*2
– –
M8078
M8082
–––––
D 8087
*1
Upper – – –––––
D 8088
*1
Lower
[X003]
Ring counter value for falling edge
(1/6 µs unit)
–
*2
– – –––––
D 8089
*1
Upper – – –––––
D 8090
*1
Lower
[X003]
Pulse width/Pulse period
(10 µs unit)
–
*2
– – –––––
D 8091
*1
Upper – – –––––
D 8092
*1
Lower
[X004]
Ring counter value for rising edge
(1/6 µs unit)
–
*2
– –
M8079
M8083
–––––
D 8093
*1
Upper – – –––––
D 8094
*1
Lower
[X004]
Ring counter value for falling edge
(1/6 µs unit)
–
*2
– – –––––
D 8095
*1
Upper – – –––––
D 8096
*1
Lower
[X004]
Pulse width/Pulse period
(10 µs unit)
–
*2
– – –––––
D 8097
*1
Upper – – –––––
[D]8098 Not used – – – – – – –––––
*1. Cleared when PLC switches from STOP to RUN.
*2. Available in Ver. 1.10 or later.
High-Speed Ring Counter
D 8099
Up-operation high-speed ring counter of 0 to
32,767 (in units of 0.1ms, 16-bit)
*3
– – – M8099 – – –
[D]8100 Not used
– – – – – – –––––
*3. The 0.1ms high-speed ring counter D8099 will operate after END instruction is executed while M8099 is ON.
Number and
name
Content of register
Applicable model
FX
3S
FX
3G
FX
3GC
FX
3U
FX
3UC
Correspond-
ing special
device
FX
1S
FX
1N
FX
1NC
FX
2N
FX
2NC